Honda Car Forum

without changing to OEM ECU?

No not unless you have the ECU reprogramed for a larger engine.

Yes, you can definately put a bigger engine in that 97 civic. As a matter of fact, you civic is probably screaming for a H-22. If you listen carefully you'll hear it begging for more horsepower, and the beauty of the H-22 (the prelude motor from '97) is that it will fit right in there under your hood with very little modification (with the exception of a new wiring harness). You will have the fastest civic in town, so remember that any increase in horsepower should be made only with an equal increase in stopping power. Therefore, look into beefing up your brakes by adding beefy disks all around.

Yes, make sure the motor you're putting in is 96-98, and all you do is unplug the computer and plug the correct one in that comes with the new motor, ( Integra, Prelude etc.) If you dont change the computer the car won't run perfect, unless you get a programmable ecu, but thats a whole other story, really changing the ecu is easier than washing your dishes and it's worth it to have your car running perfect.

go ahead then u cant turn ur car