You could always do exhaust, intake, gearing, etc. The only problem is that the 3vze doesn't see much of an improvement from any of these. The K&N fuel injection performance kit gives you a 3 horsepower gain at 4500 RPM or something like that. I have it and don't notice anything other than the great sound at WOT. Good thing I found it cheap off of craigslist. I have heard that exhaust helps quite a bit, but it is still not a well designed engine for improving. Once mine goes (over 200K miles on it already) I want to swap in a 3
4 V6. More HP and MPG right off the bat!
