Takeda short RAM cold intake install. First mod for me. Nice aggressive growl on acceleration! Prob do an exhaust upgrade next month. A Nismo tech said the stock MISMO H cat exhausted is comparable with Stillen exhausts and really don't provide any additional HP for the price and basically and even swap of exhaust systems . Is this true ?

Not true. You can check online for dyno graphs but I can tell you the stock nismo exhaust is restrictive and robbing you in hp and tq. There are other systems out better than Stillen, Fast Intentions and Motordyne for examples are two of the best exhaust system for the 370z. I went with a motordyne and couldn't be happier.

Oh wow. Thanks. Good to know...