Sorry to revive an old thread, but I was curious if you guys noticed much of a gain over the stock NISMO exhaust. I saw that F.I. (for example) claims a 20hp gain with their TDX exhaust, but that's on a base model, right? Just wondering how much of a gain there is over that NISMO exhaust.
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Current Ride: 2012 Nissan 370Z NISMO #0389
Mods: Fast Intentions Resonated Test Pipes and TDX Exhaust with 18" Resonators (#1054), K&N Drop-Ins, GTR Start Button
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