Originally Posted by Buickman104
Would it be reccomended to just buy intake tubing from ZZP (10.50 a foot) and then just buy a seperate K&N filter? That tubing does not suffer from as much heatsoak as an alluminum pipe so it is better bang for buck.
I can think of MAYBE 2 cars here that might flow enough to demand 4". And too large is NOT a good thing in most cases. To develop laminar flow and velocity, you need to choose a size to support your flow.
In fact, most cars here can't outflow INTENSE'* 3.5" tubing, but it'* much better sized for our application.