what air filter will give the biggest HP boost? K&N? thats what i wuz thinking i don't really know what is best tho.

Myself, i used K&N til i tried HKS Mega Flow Intakes.Man, HKS's filters work alot better at not restricting air plus gave me a good boost on HP and torque in my higher RPM's.Of course i don't kno if they have whole intake tubing systems for integra's so you would have to custom fit yours like i did mine.

Heaps of people over here go for the Trust Airinx pod. That’s what I’ve got on my Skyline and what I had on my FTO.

the best is NO filter, but that allows alot into your engine, killing it fast

your not adding hp/torque, your having less restriction (read the post on mufflers)

I use K&N, I might switch it but it fit what I needed it for and it defentallty helps. And its not too pricy