Wtf Did I do to my sho? New exhaust makes my car sound like a rice burner

ZSHO · May 10, 2015, 05:27:54 PM

14SHOCAR quite honestly that was a cool video in many aspects to say the least,but having my setup for well over a year it surely does not emit excessive rasp like in your video shown,another note is to give the exhaust sometime to break in and retorque all the bolts to ensure no leaks . BTW love the sound of the turbos spooling. Z

Airbornemaikai · May 10, 2015, 05:56:15 PM

Mine corsa and lms do definitely had a break in period. First couple months it definitely sounded ricey, now it sounds great and I have got compliments on it as well (from non Honda owners too)

jtoddk98 · May 10, 2015, 06:56:48 PM

Quote from: 14SHOCAR on May 10, 2015, 05:07:42 PM
Here it is gents...its still uploading to youtube... but it will be there shortly.
http://youtu.be/128SB_RY0UQ

Wow, I wasn't expecting that, I mean I was expecting a little bit of a ricey sound but not that bad. Muffler deletes sound better lol

Sent from my iPhone using Tapatalk

ShoBoat · May 10, 2015, 07:37:30 PM

Holy crap, yea sorry bud mine sounds nothing like that. It's gotta be the DPs, I have the Corsa cat back on mine and it sounds nothing like that. I have no rasp at all. I have heard other SHOs with other DPs and the Corsa and they still don't sound like that.

Sent from my iPhone using Tapatalk

jmr061 · May 10, 2015, 08:52:43 PM

You can always pick up my LMS catted downpipes and give them a try

68_GT · May 10, 2015, 11:36:23 PM

I think you can have an cat back, or downpipes but not both. I wonder which option gives better performance ?

I think your SHO sounds good at wide open throttle so how can you eliminate the rasp between 3-4 K ?

Doesn't Magnaflow have a nice high flow resonator you can stick in there ?

How does the power feel with the exhaust on ?

I really like the video posted with catted DP's, X-pipe and no resonator and stock catback. I don't see anyway the different brand of DP's could sound different unless maybe different cell count / quality cats in the catted versions.

I also like the video od the Unleased 3in catless DP's with the rest of the exhaust stock. Maybe the cheapest good set up, but then you have the engine light to deal with.

14SHOCAR · May 11, 2015, 10:02:41 AM

I'd love to have feedback from everyone given the rasp. Does anyone have videos of their cars with the STOCK downpipes and the Corsa exhaust? Also can you verify what model of Corsa exhaust you got? I'm trying to figure out where we went wrong with this.

I'd be up for ditching the downpipes if I can get the rasp under control by putting the factory exhaust or factory downpipes back in.

I just need help figuring out what the hell this is.

glock-coma · May 11, 2015, 10:07:29 AM

Have you checked The physical condition of the mufflers? It's possible that you have a damaged or broken weld / baffle internally on the muffler.

wasinger3000 · May 11, 2015, 10:18:41 AM

Quote from: 14SHOCAR on May 11, 2015, 10:02:41 AM
I'd love to have feedback from everyone given the rasp. Does anyone have videos of their cars with the STOCK downpipes and the Corsa exhaust? Also can you verify what model of Corsa exhaust you got? I'm trying to figure out where we went wrong with this.

I'd be up for ditching the downpipes if I can get the rasp under control by putting the factory exhaust or factory downpipes back in.

I just need help figuring out what the hell this is.

I had similar rasp in that exact spot that would make my ears bleed. I built a j pipe resonator to cancel out the rasp in that frequency and it is no longer in existence.

glock-coma · May 11, 2015, 10:27:41 AM

I forgot about your resonator
Wasinger. That was a genius idea.

crash712us · May 11, 2015, 10:40:15 AM

As several guys have mentioned the corsa system does have a break in period. Are you tuned? Cause I know with my DP's and corsa system is very loud under stock tune.

Sent from my iPhone using Tapatalk

SHOdded · May 11, 2015, 10:42:02 AM

Quote from: glock-coma on May 11, 2015, 10:27:41 AM
I forgot about your resonator
Wasinger. That was a genius idea.

Agreed!

ShoBoat · May 11, 2015, 10:44:56 AM

Normal inside cabin

WOT inside cabin

Outside at the track
http://youtu.be/c63DZO8k6o4

I have corsa stock DP. And the sound on mine did change over time.

Sent from my iPhone using Tapatalk

ZSHO · May 11, 2015, 11:20:35 AM

I have the Corsa 14315 sport cat back exhaust,as mentioned earlier there is a break in period which consists of 200-500 miles and will notice a change in sound,also make sure those band clamps are re-torqued after a couple of weeks,cause mine were fairly loose and could contribute to the rattle,are you tuned for the DP? the tune alone will affect the sound. Z

14SHOCAR · May 11, 2015, 12:17:58 PM

I have the LMS 3bar 93 octane V8 tune. I downloaded the new tune files onto the tuner using the updater software. When I tried to load the cat delete on the car, it says "The only available tune files are" then "Updates required to load tune file".

I tried connecting the tuner to my laptop and hit update tuner again. It said the tuner is up to date.

I just got the new tune files from LMS and am planning on loading them to see if it helps with the drone. I'm definitely not running a stock tune...