I have 5k that i would like to upgrade my transmission, suspension and engine.
What can i get with that 5k to get me the most horsepower and torque to the wheels and have a real beautiful low rumble to it?
This is my first forum ever and i dont know how this works, this is my first car that i am going to tune up.
Please call me 808 785 8115 or email at [email protected].

Unfortunately the G37 does not give a huge amount of a hp increase when doing bolt-on's. Forced induction would be the way to go and 5k is not enough.

For simple bolt-on's I would say high-flow cats and catback which could eat up to half your 5k unless you get used ones. Intake that pulls cold air vs. cone filters that simply sit in the engine bay. Then a tuner and a tune. This could result in around 320whp. Long tube headers may give you a few more whp, but that's about it. The car is fun at that range but it's no rocket.