The ECU and exhaust. However most aftermarket exhaust systems are better in terms of performance than the NISMO. The NISMO exhaust is good for about 7hp over a stock non-nismo 370z. An aftermarket system like fast intentions is good for about 15hp over stock. It's been shown going to an aftermarket on a NISMO gives you about another 5-7hp over stock on a NISMO. It's not going to be a huge change but considering how quiet the NISMO exhaust is I think going aftermarket is the best way to go for both sound and performance.
|