wat computer should a ls use to go more faster if u just have headers and a intake and wat other staff i need to make it more faaster but not pistons or turbo or nos naaa nathing like that something like computers ,ls vtec, enything like that that would make the car run hard

 

for starters you could chip and tune the stock ecu

 

Well, it would be retarded to chip your stock comp. on an LS! If you want more power and wanna keep stock ish parts, go LS-V... Throw cams/gears, springs, retainers, ect... Make a quick little N/A car... All pricey though!
If you just have header and intake, throw a full exhaust on it. You can also do some cheaper internals on the LS then chip it and will give you a little bit.

 

i was just throwin it out there and i pulled an extra 15 plus hp just tuning a stock p75 without bolt ons im just sayin