Louder NISMO

TopElement

Update: installed FI test pipes for power gains and to make the exhaust note a little more audible. Did not get HFC's to eliminate all restriction, and didn't even get resonators to get the most weight saving and clearance. Should have ordered with resonators.

It definitely got louder at cold start-up and driving, but hardly noticeable at idle. However, there is a NASTY rasp when revving up or down through the 2500-3500 range. When accelerating hard, I can hear the rasp up to about 5000 rpm. IMO it sounds like sh!t and don't recommend it. Even as an engineer I can't figure out where the rasp comes from, and it's amazing that it can get through an otherwise stock Nismo exhaust.
Power gain is defintely noticeable, perhaps 15+ hp. CEL popped up after 200 miles.
For an installation note, get a good 14mm bolt head extractor before doing any work. You WILL need it. Snap the demon bolts before doing anything else.

Long tube headers will be installed in the future.

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-'11 Gun Metallic Nismo 370z
-'12 WRB STi hatch
-'99 2.5RS coupe