rb20 upgrades without tuning

[fordinski]

hi, i bought an rb20det for my 240sx. while the engine is out im going to install a new clutch, walbro 255lph fuel pump, and new gasket set with arp headstuds. i have a 3 inch turboback exhaust for it including test pipe and an hks filter. furthermore i want to put some tomei poncams with 256 duration 8.5mm E and I, and up the boost manually to 10psi (was 7 psi when it was in my buddies r32). can i do this and expect my moneys worth? or am i gunna have to fork out for a dyno tune?

reason why i ask is because 1. im a N00b at car computers and that stuff, 2. i dont have access to a dyno anywhere near me, for numbers or even tuning, and 3. the vehicle was not meant to be a money pit in the first place. so can i expect good power out of the poncams and extra boost with stock ecu and no tune?

[jamelin]

get it tuned

[robbie2883]

you are walking a thin line not getting ti tuned....expect to rebuild your engine if you don't tune it

[bacalhau16]

You'll be wasting your money buying cams and not tuning it. Use that money and buy a wide-band O2 sensor. At least in this way, if you do turn up the boost you can make sure you are not running lean. Or just spend it on a better downpipe, exhaust or other breather/bolt on mods.

[240SxRaCeR69]

Why get cams? If you're running stock turbo and 10 psi there is absolutely no need for cams.