Quote:
Originally posted by cobain913:
that's not so bad but things liek headers and superchargers make the engine work harder. higher rpms and such make it go quicker. i mean i would hope you arent putting headers on an offroad X. you would lose a considerable amount of torque for the gain of more hp which is worthless for most of us
Your engine only works harder if YOU make it to. Headers alone does not make the engine work "harder" in any way; it only enhances combustion efficiency (though at higher rpms).

The onlything that can really hurt your engine is adding forced induction (turbo, blower, nitrous) on engines not designed for it.