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Re: Need expert exhaust advice

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Old 04-26-2011, 02:14 PM
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TJM
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Default Re: Need expert exhaust advice

What mufflers???

On a C4 Melrose headers and pipes.

What are the recommendations.

Lean towards Borla but seems only NOPI see them in Atlanta?

Language barrier issues?

TJM
Old 04-26-2011, 02:37 PM
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travisnd
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Only experience I have with C4 exhaust is the Corsa system my buddy has on his '96 GS. Super nice as all Corsa stuff is. Has a wonderful tone at WOT w/o any drone at cruise.
Old 04-26-2011, 03:06 PM
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Originally Posted by travisnd
Only experience I have with C4 exhaust is the Corsa system my buddy has on his '96 GS. Super nice as all Corsa stuff is. Has a wonderful tone at WOT w/o any drone at cruise.
On vote for Corsa.

There won't be much cruising hopefully Track only car.

Thanks

TJM
Old 04-26-2011, 03:43 PM
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SouthernSon
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Corsa here, also. If for track only, are you concerned with noise restrictions at some tracks?
Old 04-26-2011, 03:52 PM
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froggy47
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I had Corsa on my LT4 street/track car, but if you want to save some weight (it was a heavy sucker) you would probably be better off having a muffler shop fab up a custom system & would likely spend less than what a Corsa will run. IIRC mine was over $1,000.

Looked & sounded great & yes NO DRONE.
Old 04-26-2011, 04:18 PM
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95jersey
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track only, save your money and have a muffler shop run some strait pipes for a few hundred bucks.
Old 04-26-2011, 04:26 PM
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John B
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My corsa C4 system weighs a lot less than my self made mild steel @ my buddies muffler shop did.
Old 04-26-2011, 04:56 PM
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eogel
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Originally Posted by 95jersey
track only, save your money and have a muffler shop run some strait pipes....
That is what I did with my C4 ST2 car and added Flowmaster mufflers at the rear. Recently changed to no mufflers and both pipes exiting behind passenger rear wheel.
Old 04-27-2011, 11:14 AM
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jaa1992
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What db level are you shooting for?
I'm pretty sure for all but Roebling mine is "quiet" enough (90ish):
383, stainless works headers, bullet cats, dual pipes to stock LT1 mufflers

When I finally realize mine will never see the street again I'll pull the cats and have a racing muffler of some kind with tips I can rotate to meet noise regs.

And WHEN ARE WE GONNA SEE THAT BEAST on the track???????????
Old 04-28-2011, 12:52 PM
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USAsOnlyWay
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If this is true track-only, why waste the weight on a full length exhaust? Have it dump in front of the rear wheels and put a race muffler or two on there.
Old 04-28-2011, 01:09 PM
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Kubs
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Originally Posted by USAsOnlyWay
If this is true track-only, why waste the weight on a full length exhaust? Have it dump in front of the rear wheels and put a race muffler or two on there.
I am converting my car to track only this year my exhaust exits right under the diff. I have headers to bullet cats (from when it was on the street which are now my "race mufflers") to straight pipes and turn downs by the differential.
Old 04-28-2011, 04:20 PM
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Originally Posted by southern_son
Corsa here, also. If for track only, are you concerned with noise restrictions at some tracks?
Don't plan on traveling but don't want a racket either. Where's you out.


TJM
Old 04-28-2011, 04:20 PM
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Originally Posted by southern_son
Corsa here, also. If for track only, are you concerned with noise restrictions at some tracks?
Don't plan on traveling but don't want a racket either. Wears you out.


TJM
Old 04-28-2011, 04:31 PM
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Originally Posted by jaa1992
What db level are you shooting for?
I'm pretty sure for all but Roebling mine is "quiet" enough (90ish):
383, stainless works headers, bullet cats, dual pipes to stock LT1 mufflers

When I finally realize mine will never see the street again I'll pull the cats and have a racing muffler of some kind with tips I can rotate to meet noise regs.

And WHEN ARE WE GONNA SEE THAT BEAST on the track???????????


June NASA event. Depends on what breaks during break in?

I wonder what sort of restriction AMP will have? That and Skip Barber will probably be it?

I am of the opinion noise does not equal power.

The pipes allow for racing muffles behind the x-pipe I have seen some that are 4" in diametrs and seems they will fit?

Not exactly main stream but that is where they belong.

TJM
Old 04-28-2011, 04:35 PM
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Originally Posted by John B
My corsa C4 system weighs a lot less than my self made mild steel @ my buddies muffler shop did.
The Random Tech pipes are nice SS and pretty darn light.

30 lbs from headers to the end, less mufflers

TJM
Old 04-28-2011, 04:39 PM
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Originally Posted by USAsOnlyWay
If this is true track-only, why waste the weight on a full length exhaust? Have it dump in front of the rear wheels and put a race muffler or two on there.
That is where we are going with this. Two borla rounds behind an X pipes and then out the sides instead of "UP". The parts just about do that. Though I think not designed that way?

Getting close to pushing that button. Just that nagging doubt over the sound? I don't want NASCAR loud?

TJM
Old 04-28-2011, 04:43 PM
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Originally Posted by Kubs
I am converting my car to track only this year my exhaust exits right under the diff. I have headers to bullet cats (from when it was on the street which are now my "race mufflers") to straight pipes and turn downs by the differential.
I don't know about the turn downs? Out the sides is more acceptable to me.

Had a smart guy tell me that the rear section is lower pressure... not sure I bay that any of that matters?

No matter what it will $400 worth of something.

Got to happen this weekend.


TJM

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Old 04-28-2011, 05:17 PM
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shakedown067
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I'm a big Magnaflow fan! All 3" pipe.


If I where to do it again, and I probably will at some point, I'd just run it straight out the back and modify the rear bumper accordingly.

I do get a lot of compliments on the sound...
Old 04-28-2011, 05:27 PM
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Kubs
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Originally Posted by TJM
I don't know about the turn downs? Out the sides is more acceptable to me.

Had a smart guy tell me that the rear section is lower pressure... not sure I bay that any of that matters?

No matter what it will $400 worth of something.

Got to happen this weekend.


TJM
Basically I took a 180 degree pipe and cut it to make a turn down, but it doesnt go any lower than the pipe it is attached to. I dont have pictures now because my drivetrain is not in the car.
Old 04-28-2011, 05:32 PM
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TJM
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Originally Posted by shakedown067
I'm a big Magnaflow fan! All 3" pipe.


If I where to do it again, and I probably will at some point, I'd just run it straight out the back and modify the rear bumper accordingly.

I do get a lot of compliments on the sound...


I can hear why! Sounds grand!!!


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