Dual exhaust question ?????????
03-17-2007, 04:36 AM
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Dual exhaust question ????????? i have a stock 95 formula that i am currently making it into a M6. I dont want to go with the Y pipe so i am going to make it a dual with x pipe, but my queston is should the pipes be 2 1/2 or 3inch . i have seen many diffrent people use both but i have never heard the diffrence. will 3inch be to much for a stock motor. Sorry guys it has mid length headers 
03-17-2007, 05:42 PM
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formerly 2000blackcamaross (6-25-2013)
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It will hurt your low end and I don't know if your car will see tons of top end improvement. It will sound better IMHO. It will be a good mod for the future if you want to go the heads and cam route. It is up to you, but I would get true duals for the sound. True duals FTW!
03-17-2007, 09:12 PM
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thanks man but as 2 1/2 or 3 inch. i think i will be going with the two and a half. the thing is that many people use three inch will it be worth it. this car will only be a daily driver
03-17-2007, 09:31 PM
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Generally dual 3" is recommended for anything over 450hp by many of the major exhaust manufacturers.
If using a properly sized long tube header for the car, too large of an exhaust should have very little effect on low end torque. Go too small & it will hurt your top end.
For what it is worth, 2-1/2" is much easier to route under the car & will help to keep it quieter. 2-1/4" is not much different performance wise than a single 3" system, so this would be more for sound than power.
If using a properly sized long tube header for the car, too large of an exhaust should have very little effect on low end torque. Go too small & it will hurt your top end.
For what it is worth, 2-1/2" is much easier to route under the car & will help to keep it quieter. 2-1/4" is not much different performance wise than a single 3" system, so this would be more for sound than power.
