07-30-2012, 12:47 AM
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#10 (permalink)
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A True Z Fanatic
Join Date: Oct 2010
Location: NA
Posts: 1,732
Drives: NA
Rep Power: 22
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Quote:
Originally Posted by Compdoc777
From what I am told is the cats are the restriction. Any one can do a muffler delete and get the trick carbon fiber muffler with titanium blue tips for $60 off eBay and have them added to the rear of the current exhaust and have the same performance and sound as the 1200-1500 exhaust and still retain the heat shielding so you are not cooked from below.
I am on the fence of the x-pipe it works well for the 370z but I felt more performance when I had the Nismo exhaust on the car. I could feel the difference when I took it off but it was smoother, but think that is the balancing rubbers on the bottom of the exhaust.
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theres definitely a restriction at the H-pipe as well. if you have a high flow cat, the pipe is 2.5". the opening to the H-pipe i believe was 2.25" and then it opens back up to 2.5" before it hits the muffler. from what a tech at a local shop told me, it was probably done to increase backpressure. he told me opening it up to 2.5" might increase the power a bit, but of course thats all hearsay.
with that said, heres another bump. still want an X-pipe or some sort of replacement for our nismo's!
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