Easiest "bolt on" performance would be a cold air intake and upgrade the exhaust behind the catalytic converter to a larger diameter and a less restrictive muffler. Let that engine breath a little better and you'll gain a few horses.
Thanks! Just found out its illegal here in California though haha
I dont want to end up having to change engine or any other part if if cant handle the upgrades. its a 94 civic ex coupe
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