90mm or larger air lid?

The normal air lids are big enough for a 75mm ID MAF to fit inside of. Go measure your current one.
its really nice. But I am wanting to utalise the fast toys ram air that is already on my car. I bought a 4.25"i.d. Pvc pipe and want to just cut the hole in my air lid and epoxy the new one in trim to fit sand and paint.... I would think the K/N FIPK would out flow the stock sized filter due to more filter surface? I would like to see some real world back to back testing from someone on this. If my theory is right then the stock sized filter will be the restriction over the 4" OD pipe?
The old school rule of thumb was the bigger the air cleaner the better, some guys would even stack two air cleaners on top of each other...lol
I had a 3" dropped base with a 6" K/N filter under the hood of my 69 Camaro with the stock cowl hood.


