CAI-Already searched the forums

[vailskier3]

idk if it makes sense to have a 4" section when the TB is 3" and the maf is 3" too...idk, i'm on my 4th intake setup now...lol

[FriboRage]

idk if it makes sense to have a 4" section when the TB is 3" and the maf is 3" too...idk, i'm on my 4th intake setup now...lol

I've read that discussion a few times and the way I think of it is that with a 3" pipe, the airflow is just keeping up with what's needed, but with a 4" section that offers some extra space and flow, it acts like a reserve tank when you wanna go fast, you're able to pull more air through that 3" TB since there's more air available in that 4" section of the pipe.

Although, Im sure you wouldnt really have a noticable difference.