A good friend of me has an 03. Current mods are-

HKS 264 cams
UICP/small battery
Full TBE (stock o2 housing)
Air intake
Blitz EBC


Car has a decent tune on it. Considering that he's on a budget, are the next best 'bang for the buck' mods lower intercooler piping and an O2 housing? It'll also get an E85 tune once the next round of parts are installed. Obviously a FMIC would help too. Thanks!

 

nothing really else small you can add i would get better cams for sure. the only other things you could do is start porting parts. intake manifold 65mm throttle body ported exhaust manifold and as you mentioned you need a better front mount intercooler piping and o2 housing

 

walbro, 1000cc injectors, o2 housing, licp, e85 tune.. and as stated already, better cams if the funds are there