i have a jdm b18c sirg in my integra, and at the moment, im running the jdm ecu. will there be any noticible differences in performance, emmsions, gas milage, or check engine lights if i ran a usdm ecu? from what i know, the only difference is the .6 more compression in a jdm engine, how will this affect everything? in an obd1 and in an obd2 engine, thanks
-quikflip

 

Im running the same set-up. There is no difference that i can tell. I think it has like 10 more hp, gets about 30 mpg, i do have a check engine light, but im almost sure it's just a sensor. Keep running the JDM ecu.