stock slot maf in a 4.5 inch diameter tube

[dleach1407]

My uncle is a machinist and has the ability to make me a custom maf housing that will work with a slot maf. My truck has a 4 barrel throttle body and I want to put a maf on top of the throttle body with an air cleaner on top of that. My goal is to use a 5 inch long air cleaner spacer with a 4.25-4.5 inch inner diameter with a slot maf in it. I am going to use an air straightener at the top (maybe bottom too) of the 5 inch long maf. Im going to try and use a drop down base to help hide the maf. I have an hpx slot maf but I figure since its in such a big housing a stock maf sensor may give me better resolution. My hpx maf in a 4.5 inch housing supports 1800 HP... I definitely dont need that. If I need to, I can shrink the inner diameter down more too but 4.5 inches matches the outer edges of the throttle ports criss-cross from each other. Thoughts?

[decipha]

Yeah definitely toss a screen on the bottom too. I'd recommend doubling up on the screens two on the top and two on the bottom.

Yeah a stock maf is all you need with a bore that large it'll support well over 600 hp no problem.

but yeah sounds good to me, I'd go for it.

[dleach1407]

I dont use a screen. I use a honeycomb structure in front of the maf. I have one of these in my charge pipe about 2 inches in front of my maf. I was going to use the 4:1 version in each end.

http://www.saxonpc.com/100mm-cells-for-100.html

[dleach1407]

What is the largest inner diameter I can get away with using a stock element? It looks like 4.75 is the inner diameter I'm stuck with

[decipha]

Not sure what your asking but ive put stock slots in 6" pipe with no problem

[dleach1407]

ive put stock slots in 6" pipe with no problem

Thats what I was asking. Do you by chance have a maf curve for something in the 4.75 inch range? Heck, im sure I could do it with a stock maf curve from a 05gt. Ill just need do some math.

[decipha]

yeah theres a few maf calculators for the alot mafa where u plug in the pipe size and it spits out the curve.

just take a stock slot curve for a 3" pipe and multiply it by 1.8 to get started then dial it in no problem