i always hear people say ecu tuning is the most important thing u can do. so im wondering if that applys to me as well. i drive a 99si wit a b18c swap and the usual mods. intake, exhaust, headers, cam gears, fuel rail. i guess my ? is, is there ecu tuning i could do to improve power in my ride or is that mostly for turbos and superchargers. i hope my ? makes sense to u

 

usually u need to tune ur car when turbo, supercharge, or build ur motor (high comp. pistons, rods, springs, valves, fuel systemetc). imo i don't think it would b worth it to have ur car tuned b/c for the money u would spend on a tune (300-??? dollars) wouldn't be worth the horsepower gains u would see.i would save ur money and get some more mods then go get a tune.