DP selection

EcoPowerParts · January 17, 2014, 04:00:29 PM

Quote from: SHOdded on January 17, 2014, 03:49:44 PM
Wonder if it would help the transmission/PTU temps too?

Only way to know would be to have two cars with coated and non coated identical setups driving around together and data logging.
I'll make sure we do some temp readings on his car once they're installed as far as the downpipes and under hood parts (intake manifold) to see if we see a difference.

BiGMaC · January 17, 2014, 04:15:40 PM

Quote from: 4DRHTRD on January 17, 2014, 04:00:29 PM
I'll make sure we do some temp readings on his car once they're installed as far as the downpipes and under hood parts (intake manifold) to see if we see a difference.

The way to do it for sure. I'm... and everything will be right there at BMR anyway!

68_GT · January 20, 2014, 10:08:48 PM

how is the quality of the cats used on the different brands of downpipes ? I'd worry about them crapping out 15k miles later.

I never noticed any smell on my Mustangs with deleted cats. And in TX I can't find anyone to even want to remove my third cat much less the downpipes for non catted which I want to save the extra money and not have a crappy cat in there. I'm not worried about some teenager wanting to look under my SHO for visual cat inspection, plus I like the idea of the sound from stock exhaust with non catted DP's. But I'm saving $60k for a downpayment on a new 3 car garage (house comes with it lol). Plus I'm building a 68 F100 So I'm not in a rush to mod the SHO.

BiGMaC · January 20, 2014, 10:15:53 PM

PPE uses the Magnaflow cat. warranty through MF.... dunno about others

Ya'... I believe it is the cats that make the smell many complain about

EcoPowerParts · January 20, 2014, 11:30:10 PM

Quote from: 68_GT on January 20, 2014, 10:08:48 PM
how is the quality of the cats used on the different brands of downpipes ? I'd worry about them crapping out 15k miles later.

I never noticed any smell on my Mustangs with deleted cats. And in TX I can't find anyone to even want to remove my third cat much less the downpipes for non catted which I want to save the extra money and not have a crappy cat in there. I'm not worried about some teenager wanting to look under my SHO for visual cat inspection, plus I like the idea of the sound from stock exhaust with non catted DP's. But I'm saving $60k for a downpayment on a new 3 car garage (house comes with it lol). Plus I'm building a 68 F100 So I'm not in a rush to mod the SHO.

The magnaflow cats that PPE uses has been tested quite a bit via their header and downpipe kits with great results as far as passing emissions and longevity.

MTaurusSHO · February 08, 2014, 09:33:41 AM

So a catted setup will smell worse than a non catted?

dmharvey79 · February 08, 2014, 09:40:29 AM

A set of catted PPE downpipes are the next mod I'm considering, but prices need to come way down before I get serious about it.

EcoPowerParts · February 08, 2014, 10:05:13 AM

Quote from: dmharvey79 on February 08, 2014, 09:40:29 AM
A set of catted PPE downpipes are the next mod I'm considering, but prices need to come way down before I get serious about it.

Prices won't be coming down, sorry they are hand made in the US for each order and the materials are top notch including the $200 each cost for the cats.
These are not cheap products to build.

EcoPowerParts · February 08, 2014, 10:05:59 AM

Quote from: MTaurusSHO on February 08, 2014, 09:33:41 AM
So a catted setup will smell worse than a non catted?

I had horrible smell with stock downpipes/cats, no smell at all with PPE downpipes with cats.

BiGMaC · February 08, 2014, 10:08:53 AM

Quote from: MTaurusSHO on February 08, 2014, 09:33:41 AM
So a catted setup will smell worse than a non catted?

I bow to 4Dr's experience... so I expect no odor.

I will be able to give an educated opinion after I get them on my ride... We'll be dynoing so they will be incidentally tested for odor then. I just don't personally know about the Magnaflow free flow cats that PPE is using as far as odor. ...

BUT... I do want to exhaust mod and the bolt-on WHP without emissions problems.. odor be damned! Many (and I) do notice an odor after spirited driving with stock cats. So no odor is nice, but moot for me.

SwampRat · February 08, 2014, 05:23:42 PM

Quote from: BiGMaC on February 08, 2014, 10:08:53 AM
Quote from: MTaurusSHO on February 08, 2014, 09:33:41 AM
So a catted setup will smell worse than a non catted?
I bow to 4Dr's experience... so I expect no odor.

I will be able to give an educated opinion after I get them on my ride... We'll be dynoing so they will be incidentally tested for odor then. I just don't personally know about the Magnaflow free flow cats that PPE is using as far as odor. ...

BUT... I do want to exhaust mod and the bolt-on WHP without emissions problems.. odor be damned! Many (and I) do notice an odor after spirited driving with stock cats. So no odor is nice, but moot for me.

All moot to me , no worry about smell issues. OK has no emissions testing so I'll be ordering non catted PPE DP's from 4DR and an SCT with Tunes from Torrie first week of March when My SHO comes home from the Body Shop.

BiGMaC · February 12, 2014, 02:36:26 AM

To help you all answer the questions raised by the thread title ...
Timetables moved up a bit thanks to Paul at PPE and Jeremy at Black Market Racing. Going to PPE at 10 am today (We'd) and then to BMR. By the end of the day we should have dyno and under hood temp readings for stock, no catted, and thermal coated catted downpipes.

I will also do pics of all the on and off work with the pipes and try to get vids with sound for you to compare

mval · February 12, 2014, 09:27:53 AM

I have the catted versions non thermal coated now installed for about a month & have not noticed any smell issues & no engine codes. Cats look to be about the same size as the factory ones only a lot better looking as are the pipes themselves. The factory cast iron ones with their smashed in sections look down right ugly compare the PPE's high quality ones. We have emissions testing here & mine is in June but my guy is convinced that they will easily. pass. I just got my factory ones cooling their heels in my basement just in cases. I have no tune, but my crude test track out near a friend of mines farm. What I noticed is I normally launched @ around 2250 rpm, as my tach only has that line on it, & got small wheel spin. I had to reduce it to 2000 to get same wheel spin. My guy think that the downers take advantage of the cai & cat backs to get the increase in HP. As I said before am very low tech, so not sure what this means as for as hp gain.
mikev

steve142857 · February 12, 2014, 10:48:14 AM

Quote from: mval on February 12, 2014, 09:27:53 AM
I have the catted versions non thermal coated now installed for about a month & have not noticed any smell issues & no engine codes. Cats look to be about the same size as the factory ones only a lot better looking as are the pipes themselves. The factory cast iron ones with their smashed in sections look down right ugly compare the PPE's high quality ones. We have emissions testing here & mine is in June but my guy is convinced that they will easily. pass. I just got my factory ones cooling their heels in my basement just in cases. I have no tune, but my crude test track out near a friend of mines farm. What I noticed is I normally launched @ around 2250 rpm, as my tach only has that line on it, & got small wheel spin. I had to reduce it to 2000 to get same wheel spin. My guy think that the downers take advantage of the cai & cat backs to get the increase in HP. As I said before am very low tech, so not sure what this means as for as hp gain.
mikev

They do add a little HP (probably around 15hp with your setup). As for Wheel spin when launching... I'd say it has more to do with your tires ; )

mval · February 12, 2014, 11:00:18 AM

steve:
you're probably right about the tires. i was just using the wheel spin as a comparison of before & after the downers. The factory goodyears are worn of all places down the middle. tires have never been over inflated. my guy thinks somehow where too wide for the wheel. anyway as soon as weather gets nicer am replacing the 19's with 20's custom wheels with conti DWS tires & by the way love your new sport especially like the explorer logo on front with white color & the wheels, but we should start a pot on how long it will stay white & not some wild color like your SHO!!!!!!!!!!!! I'm betting that you won't be able to resist the urge.
mikev