Originally Posted by 370zwish

Thanks for the replies, another question I have is about mods. With my G35 it was very difficult to get any more noticiable power gains out of the 3.5 without FI. Is it the same case with the 3.7. From what ive learned about my car is that a $1300 exhaust system gets you maybe 10 hp and nothing that you will notice. The 3.5 was tuned to about max from the factory leaving very little improvement. Just like to know if its the same case with the 3.7.