Quote:
Originally Posted by jwick
You could very well be correct there. I was only concerned with flange locations and didn't measure pipe O.D. Maybe the O.D. difference is where the extra 2hp comes from.
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Quote:
Originally Posted by jwick
I would. I can see Nissan changing the O.D. of that 18" of y-pipe so that the Z would have better HP numbers.
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I'm not sure how Nissan runs their engines while on the Dyno. Meaning im not sure if it has full intake and exhaust bolted to the motor during the time of testing. If that's the case then yeah I could theoretically see the extra 2hp difference coming from that change in sizing.
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