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Old 10-24-2012, 03:43 PM   #3488
Scooby Specialist
Member#: 249401
Join Date: Jun 2010
Location: Nord' St Paul
2005 LGT and 91 MX5


Originally Posted by xluben View Post
I think the performance difference is very minor, and I don't mind it being quiet. So it really just comes down to the stock exhaust looking pretty mediocre compared to some of the better quad tip offerings. But for looks I'm not interested in paying more than a couple hundred bucks or so. Which pretty much means I'll end up with the stock exhaust, lol.

Originally Posted by xluben View Post
This plot shows great results from just changing the cat back! Above about 4.5k RPM's there are approx. 25WHP and 25WTQ gains all the way to redline! Minor fueling tweaks were made to the tune to make sure the AFR's were the same, but the boost and timing were left the untouched. For just changing a cat back, this is a very nice result to see. I don't know if the gains would translate to a lower powered setup, but on my car the exhaust really seemed to have freed up some top end power.

So... are you thinking that you might lose some of that power?
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