I own a 2003 g35 coupe. The only mod I have is a cold air intake. I would like to know how I can get more HP. I was considering new exhaust. Does anyone have any advice for me regarding where I can find more power in my engine. Is there a reliable forced induction system for an every day driver that won't kill me financially? Any help would be appreciated, thanks.

How much power are you looking to get? There's a few places to get 5-10 hp here and there, but if you want much more than that, you're really going to be looking at forced induction. Stillen and Vortech make good kits, but the price certainly isn't cheap. Unfortunately there's a lot more going on in these cars than something like a civic, so you have to pay accordingly.

What kind of a budget are you looking at, and what are your power goals?

I suppose I am looking for small gains, such as exhaust, plenum spacer, and anything else short of FI. I know if I go FI we are talking big money and I don't know where I would even do with that kind of power.