Ecoboost Performance Forum

Ecoboost Vendor Section => Ecoboost Vendors => Livernois Motorsports and Engineering => Topic started by: StealBlueSho on November 30, 2018, 02:46:52 PM

Title: Thunderstorm High Flow Catted Downpipes
Post by: StealBlueSho on November 30, 2018, 02:46:52 PM
Will your HFC downpipes pass the OBDII readiness?
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: Livernois Motorsports on November 30, 2018, 03:27:42 PM
Quote from: StealBlueSho on November 30, 2018, 02:46:52 PM
Will your HFC downpipes pass the OBDII readiness?
Absolutely not in short words, our downpipes are for race/offroad use and will not pass any emissions testings
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: StealBlueSho on November 30, 2018, 03:31:51 PM
Thanks for the quick response.


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Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: Livernois Motorsports on November 30, 2018, 03:33:35 PM
Quote from: StealBlueSho on November 30, 2018, 03:31:51 PM
Thanks for the quick response.


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No problem if you need anything else let us know!
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: Agentlongwood on November 30, 2018, 08:14:26 PM
If they don't pass then whats the point of choosing them over the catless models?  Honestly not being a smart-alec.  I'm betting it's something I just haven't thought of.  Like are there race classes that require a physical catalytic converter, but don't need to pass OBDII?  Or something along those lines?

Side note:  Huge respect to you folks at Livernois for being upfront that they are not intended to pass OBDII.  I feel like a lesser company would use marketing lingo and avoid answering the question. 
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


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Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: StealBlueSho on November 30, 2018, 08:44:55 PM
Quote from: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!

It's happened. And it cost my buddy $6K in EPA fines. He was driving a fox body.


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Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: 802SHO on November 30, 2018, 09:07:06 PM
Quote from: StealBlueSho on November 30, 2018, 08:44:55 PM
Quote from: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!

It's happened. And it cost my buddy $6K in EPA fines. He was driving a fox body.


Sent from my iPhone using Tapatalk

That's crazy!  I feel bad for your buddy that he ran into the biggest dbag on the planet.  I think I'm right when I say the majority of cops would look down on a fellow cop going that far!  Especially since at least one on the force probably doesn't have them either...........and I'm not talking about BPD.  Lol no seriously I know a guy who has a catless downpipe on his WRX and hes a cop. 
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: StealBlueSho on November 30, 2018, 09:13:00 PM
Quote from: 802SHO on November 30, 2018, 09:07:06 PM
Quote from: StealBlueSho on November 30, 2018, 08:44:55 PM
Quote from: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!

It's happened. And it cost my buddy $6K in EPA fines. He was driving a fox body.


Sent from my iPhone using Tapatalk

That's crazy!  I feel bad for your buddy that he ran into the biggest dbag on the planet.  I think I'm right when I say the majority of cops would look down on a fellow cop going that far!  Especially since at least one on the force probably doesn't have them either...........and I'm not talking about BPD.  Lol no seriously I know a guy who has a catless downpipe on his WRX and hes a cop.

Yea I dunno... cops in Northern VA can be interesting. There was such a bad issue with street racing at one point they were giving tickets to anyone running anything aftermarket... and since Virginia is a Commonwealth they can get away with a lot of dumb stuff....

IE: At one point ANY modified exhaust was a ticketable offense..and cops wrote those tickets all day long.. felt bad for the judges who had to sort that stuff out...


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Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: 802SHO on November 30, 2018, 09:21:26 PM
Quote from: StealBlueSho on November 30, 2018, 09:13:00 PM
Quote from: 802SHO on November 30, 2018, 09:07:06 PM
Quote from: StealBlueSho on November 30, 2018, 08:44:55 PM
Quote from: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!

It's happened. And it cost my buddy $6K in EPA fines. He was driving a fox body.


Sent from my iPhone using Tapatalk

That's crazy!  I feel bad for your buddy that he ran into the biggest dbag on the planet.  I think I'm right when I say the majority of cops would look down on a fellow cop going that far!  Especially since at least one on the force probably doesn't have them either...........and I'm not talking about BPD.  Lol no seriously I know a guy who has a catless downpipe on his WRX and hes a cop.

Yea I dunno... cops in Northern VA can be interesting. There was such a bad issue with street racing at one point they were giving tickets to anyone running anything aftermarket... and since Virginia is a Commonwealth they can get away with a lot of dumb stuff....

IE: At one point ANY modified exhaust was a ticketable offense..and cops wrote those tickets all day long.. felt bad for the judges who had to sort that stuff out...


Sent from my iPhone using Tapatalk

Aww yes Virgnia.  Don't want to mess around with any Commonwealth State...theyre not playing.  My best friend from Vermont moved there a while back and ended up one night going 98 in a 55.  No criminal record.  Sentenced to a day in jail and 3 years probation....mind boggling to us.  Here in VT that would have been a hefty ticket.  Doubling the speed limit would be a careless and negligent and that doesn't even land you in jail ....maybe different now but 10 years ago NO WAY!  After that incident I have always been weary of my conduct in Virginia...on my best behavior 😇...try to be anyway.  Feel much safer here in the Green Mountain State! 

Oh and I do own the LMS catless downpipes...back to the post......visual inspection here and my mechanic doesn't care so long as no lights on in the dash...good to go 👍
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: Agentlongwood on November 30, 2018, 10:07:21 PM
I don't know... If the point was to pass "Visual Inspection" then why put a real catalytic converter in there at all?  Just shape the piping to look like a cat on the outside, but be perfectly flowing straight pipe on the inside.  It would be cheaper, perform better, and accomplish exactly the same thing, in terms of passing visual but failing OBDII.  I think there's got to be more to it then that...
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: shoNoff on November 30, 2018, 11:03:21 PM
Quote from: StealBlueSho on November 30, 2018, 08:44:55 PM
Quote from: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!

It's happened. And it cost my buddy $6K in EPA fines. He was driving a fox body.


Sent from my iPhone using Tapatalk


Samething happened to me in fox body. That is why I have catted downpipes on my car now. I got out of the fines for reasons I'd rather not type out on the Internet.
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: 802SHO on December 01, 2018, 10:00:30 AM
Quote from: shoNoff on November 30, 2018, 11:03:21 PM
Quote from: StealBlueSho on November 30, 2018, 08:44:55 PM
Quote from: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!

It's happened. And it cost my buddy $6K in EPA fines. He was driving a fox body.


Sent from my iPhone using Tapatalk


Samething happened to me in fox body. That is why I have catted downpipes on my car now. I got out of the fines for reasons I'd rather not type out on the Internet.

Reminds me of the Biggie Smalls song lyrics..."note to the plaintiff your daughter's tied up in a Brooklyn basement, face it NOT GUILTY" 😂🤣🤣
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: stevelaw_2000 on April 02, 2019, 06:33:57 PM
Quote from: 802SHO on November 30, 2018, 09:21:26 PM
Quote from: StealBlueSho on November 30, 2018, 09:13:00 PM
Quote from: 802SHO on November 30, 2018, 09:07:06 PM
Quote from: StealBlueSho on November 30, 2018, 08:44:55 PM
Quote from: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!

It's happened. And it cost my buddy $6K in EPA fines. He was driving a fox body.


Sent from my iPhone using Tapatalk

That's crazy!  I feel bad for your buddy that he ran into the biggest dbag on the planet.  I think I'm right when I say the majority of cops would look down on a fellow cop going that far!  Especially since at least one on the force probably doesn't have them either...........and I'm not talking about BPD.  Lol no seriously I know a guy who has a catless downpipe on his WRX and hes a cop.

Yea I dunno... cops in Northern VA can be interesting. There was such a bad issue with street racing at one point they were giving tickets to anyone running anything aftermarket... and since Virginia is a Commonwealth they can get away with a lot of dumb stuff....

IE: At one point ANY modified exhaust was a ticketable offense..and cops wrote those tickets all day long.. felt bad for the judges who had to sort that stuff out...


Sent from my iPhone using Tapatalk

Aww yes Virgnia.  Don't want to mess around with any Commonwealth State...theyre not playing.  My best friend from Vermont moved there a while back and ended up one night going 98 in a 55.  No criminal record.  Sentenced to a day in jail and 3 years probation....mind boggling to us.  Here in VT that would have been a hefty ticket.  Doubling the speed limit would be a careless and negligent and that doesn't even land you in jail ....maybe different now but 10 years ago NO WAY!  After that incident I have always been weary of my conduct in Virginia...on my best behavior ...try to be anyway.  Feel much safer here in the Green Mountain State! 

Oh and I do own the LMS catless downpipes...back to the post......visual inspection here and my mechanic doesn't care so long as no lights on in the dash...good to go
How did this down pipes work for you? I just bought a pair and haven't put them on yet. Getting a new tune before I put them on


Sent from my SM-N950U using Tapatalk

Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: 802SHO on April 02, 2019, 06:51:03 PM
They are lovely!  100% satisfaction here and reasonably priced too!
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: 802SHO on April 02, 2019, 06:51:54 PM
Mine are catless however 😏
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: StealBlueSho on April 02, 2019, 07:04:37 PM
(https://uploads.tapatalk-cdn.com/20190402/b0868a23961c230c13e1d238ac81c5a6.jpg)


I went EPP Catted thermal coated this go around...


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Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: 18SHO on April 02, 2019, 07:10:04 PM
Is the catted DP versions even worth the money ? Isn't there minimal gains with them?
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: StealBlueSho on April 02, 2019, 07:11:51 PM
Quote from: 18SHO on April 02, 2019, 07:10:04 PM
Is the catted DP versions even worth the money ? Isn't there minimal gains with them?

EPP catted pipes will pass emissions if they only do the OBD2 check. There is a 1-2HP loss with the EPP catted be non-catted.



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Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: 76fomoco on April 02, 2019, 07:12:33 PM
just put a set of EPP catted on last month. they are almost a work of art. all stock exhaust past them and no sound change. One thing I did notice is just before the 3rd cat you get a pipe restriction at the last foot to the 2.125" pipe. Would be nice it you could keep the 2.5" all the way to the 3rd cat and replace the 3rd cat with a H or X pipe in the 2.5" range. after that the 2.125 wouldn't matter.
Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: StealBlueSho on April 02, 2019, 07:14:20 PM
Quote from: 76fomoco on April 02, 2019, 07:12:33 PM
just put a set of EPP catted on last month. they are almost a work of art. all stock exhaust past them and no sound change. One thing I did notice is just before the 3rd cat you get a pipe restriction at the last foot to the 2.125" pipe. Would be nice it you could keep the 2.5" all the way to the 3rd cat and replace the 3rd cat with a H or X pipe in the 2.5" range. after that the 2.125 wouldn't matter.

Should be a work of art for the price!


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Title: Re: Thunderstorm High Flow Catted Downpipes
Post by: lamrith on April 03, 2019, 01:49:55 PM
Quote from: stevelaw_2000 on April 02, 2019, 06:33:57 PM
Quote from: 802SHO on November 30, 2018, 09:21:26 PM
Quote from: StealBlueSho on November 30, 2018, 09:13:00 PM
Quote from: 802SHO on November 30, 2018, 09:07:06 PM
Quote from: StealBlueSho on November 30, 2018, 08:44:55 PM
Quote from: 802SHO on November 30, 2018, 08:43:18 PM
Quote from: StealBlueSho on November 30, 2018, 08:28:55 PM
That is an interesting question indeed....

I know where I live there is no emission testing (yet!) but during the safety inspection they do a visual check to make sure there are cats in the car.

Also, if you get pulled over and a cop decides to do a visual, and there are no cats it's thousands of dollars per cat that been removed in fines.

So even if they don't pass readiness, it still helps ME to have them there lol.


Sent from my iPhone using Tapatalk

Wow...I know to keep cool and just roll with the punches but if a cop got down on his knees and tried to determine from looking under my car on the ground I would NOT be able to resist an onslaught of less than polite phrases to decribe his level of interest ....Holy **** I mean...does that type of situation even exist?  I understand to become an officer to protect and serve..prevent and stop crimes from happening...solve murders, save peoples lives...even the usual traffic laws.....but try and determine if I have cats or not ....what???????  Get a ****** life!

It's happened. And it cost my buddy $6K in EPA fines. He was driving a fox body.


Sent from my iPhone using Tapatalk

That's crazy!  I feel bad for your buddy that he ran into the biggest dbag on the planet.  I think I'm right when I say the majority of cops would look down on a fellow cop going that far!  Especially since at least one on the force probably doesn't have them either...........and I'm not talking about BPD.  Lol no seriously I know a guy who has a catless downpipe on his WRX and hes a cop.

Yea I dunno... cops in Northern VA can be interesting. There was such a bad issue with street racing at one point they were giving tickets to anyone running anything aftermarket... and since Virginia is a Commonwealth they can get away with a lot of dumb stuff....

IE: At one point ANY modified exhaust was a ticketable offense..and cops wrote those tickets all day long.. felt bad for the judges who had to sort that stuff out...


Sent from my iPhone using Tapatalk

Aww yes Virgnia.  Don't want to mess around with any Commonwealth State...theyre not playing.  My best friend from Vermont moved there a while back and ended up one night going 98 in a 55.  No criminal record.  Sentenced to a day in jail and 3 years probation....mind boggling to us.  Here in VT that would have been a hefty ticket.  Doubling the speed limit would be a careless and negligent and that doesn't even land you in jail ....maybe different now but 10 years ago NO WAY!  After that incident I have always been weary of my conduct in Virginia...on my best behavior ...try to be anyway.  Feel much safer here in the Green Mountain State! 

Oh and I do own the LMS catless downpipes...back to the post......visual inspection here and my mechanic doesn't care so long as no lights on in the dash...good to go
How did this down pipes work for you? I just bought a pair and haven't put them on yet. Getting a new tune before I put them on


Sent from my SM-N950U using Tapatalk
Put them on before you have that tune done.  A good DP will affect how the turbo's spool, make sure your tuner has datalogs with the DP installed so he can adjust properly for the changes.
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