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WTB: 3inch 951 Exhaust!!

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Old 10-04-2010, 07:17 PM
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azbanks
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Originally Posted by blade7
Vacuum in the exhaust ?, unless you're going for a larger bore discharge pipe I don't think there's much to gain going bigger than 2.5 inch for the system, I don't understand the efficiency of systems that get bigger for the tail section either, the exhaust gas is cooler and the volume has contracted I would have thought.
I don't want to sound rude but search is your friend. This has been covered extensively in many threads. The factory exhaust is very inefficient. There are good gains available with going to a 3" or a 4" exhaust.
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Old 10-04-2010, 08:19 PM
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Originally Posted by azbanks
I don't want to sound rude but search is your friend. This has been covered extensively in many threads. The factory exhaust is very inefficient. There are good gains available with going to a 3" or a 4" exhaust.
On a modified car maybe. I have dyno tested a 3" exhaust (no cat) vs a 2.5" exhaust (no cat) on a stock car, and the gains were 4hp and 7ft/lbs of torque. The biggest gains are from getting rid of the cat.
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Old 10-04-2010, 08:59 PM
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Originally Posted by azbanks
I don't want to sound rude but search is your friend. This has been covered extensively in many threads. The factory exhaust is very inefficient. There are good gains available with going to a 3" or a 4" exhaust.
No offence taken, done some searching too and I'm not under estimating the asthetics or the fact it sounds faster but with a standard turbocharger perhaps gutting the cat and fitting a less restrictive back box will get near enough to save some cash.
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Old 10-04-2010, 09:50 PM
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For the finacially impaired, what would be the best way to replace the cat and achieve that free flowing stock exhaust?

Oh yea, I only use the car for closed course events...

(didn't mean to hijack...sorry)
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Old 10-04-2010, 09:57 PM
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Originally Posted by piperporsche180944
I saw that too!!!!

Originally Posted by CyCloNe!
mwc951... wat the heck was that?! exhaust jacker... I got my eye on u
CyCloNe...no need to get excited...YOU got dibs!!
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Old 10-04-2010, 10:18 PM
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CyCloNe!
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I got dibs cause because I showed a little leg...thigh.. and a quarter butt cheek...

no worries bro I don't get mad or offended
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Old 10-05-2010, 11:14 AM
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azbanks
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Originally Posted by PorscheDoc
On a modified car maybe. I have dyno tested a 3" exhaust (no cat) vs a 2.5" exhaust (no cat) on a stock car, and the gains were 4hp and 7ft/lbs of torque. The biggest gains are from getting rid of the cat.
I'd like to see the dyno test of a 3" with a good performance cat vs 2.5" factory with cat.
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Old 10-05-2010, 08:00 PM
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Black51
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^^^With higher boost as well.
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Old 10-05-2010, 08:12 PM
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Any difference between a 2.5"-no cat vs. a 3"-no cat?? (w/bigger turbo)
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Old 10-06-2010, 04:25 AM
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Originally Posted by CyCloNe!
I got dibs cause because I showed a little leg...thigh.. and a quarter butt cheek...

no worries bro I don't get mad or offended
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