03-23-2011, 03:03 PM
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#10 (permalink)
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Track Member
Join Date: Nov 2008
Location: San Francisco
Posts: 846
Drives: 991.2 GT3
Rep Power: 19
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Quote:
Originally Posted by christian370z
I have no dyno sheet, but the stock cats are the single largest restriction in the entire exhaust system so I don't understand how that is possible. I installed Berk HFCs in my car with a Tanabe Y pipe and the stock exhaust and put down 309rwhp which is the same or even a bit more power than what other Zs with CBEs put down on the same dyno.
After installing my FI CBE, I felt an additional bump in power and will be going on the same dyno to see what I gained soon.
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I know Cats are the main restriction in the exhaust, that is why I don't think High-flow cats help too much. Its the removal of cats that makes power. Saying "high-flow" cat to me is like saying "fast snail"... I think its has more of a placebo affect on power.
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350z / 40th 370z / C6 Z06 / BMW M4 / V10 R8 / C7 Grand Spot / 997.1 GT3 / S2K / Camaro ZL1 / 718 GTS / 991.2 GT3
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