Originally Posted by Kestrel
They would probably benefit more than Civics with 1.6 or 1.5 L. Really the relevant parameter is the flow rate of air into the engine, which is a function of RPM and displacement. Since the K20 is a higher rev engine than the Accord or CR-V engine, so it would see more benefits. Subaru's, for instance, are 2.5 L and they see up to 15 HP from intake and exhaust alone, and most V8's see pretty large power gains from exhaust mods as well.
true but all of those motors beneit greatly from more air. I think it is more of the variable intake cam then the displacement. it still gains great amounts of power within the rpm range of the crv and accord. Saying what you are saying is equivilent to saying that when i bore my b18 over to a b20(same rpm basically) that i will see like a 15 hp gain over the .2 liters that i used to not have just from bolt-ons