H22toF20

The FIPK pipe is small. It's 3" OD, but the piping thickness is very thick. I' still debating on a 3.5" intake to be ran with my FIPK box.

K LO QUE

Yeah is closer to 2.5". After measuring this FIPK I'm going to look into 4" piping for sure.

Dude_Man

Not that it really matters but for fun I ran my friends turbo gsr from a 20 roll and beat it by a car and a half. It made 270whp that day, he spun down low and wasn't able to real me in

s2knoob89

Looks good. I was going to do a similar setup but decided to save the money and go FI.

billios996

that short conical reducer at your TB is likely creating a good bit of turbulence. Consider a longer conical reducer to smooth out the air flow. Is the inlet of the TB radiused at all? Is there value in a velocity stack right on the TB inside the 4" pipe? (hmm, I may need to try building this. Anybody builds this, I want royalties ).

Dude_Man

That's the only reducer I could find I'm going to look into getting an aluminum one made. I could technically make one out of sheet metal but I'd have a seam. I have another throttle body I'm going to port. As for the velocity stack, it's too small of a difference to fit on in. If it was a 5 or 6" intake it would work.

rrounds

I doubt we have room for a 6" pipe but if we did then something like this would work.

http://s188.photobucket.com/albums/z...ndsintake2.jpg

That's 3.5" off the T/B to a 6" velocity stack and then 6" from there to the filter. That 6" 90* bend use to feed a 855 c.i. engine.

ROD

wadzii

it does create some turbulence, but not enough to make any real difference. the fastest moving air is moving through the center of the pipe, the air on the outsides along the surface of the tube will be pretty slow by comparison. The difference in air speed makes the sharp transision work better than it "looks" like it should. A longer transition is no doubt going to be better, but not enough to notice or matter.

the longer the pipe is the less a velocity stack at the opening matters. If the pipe is very short a stack will help a great deal, but with a long intake the length of the intake serves to smooth out the air flow. On my long intakes, there is usually no difference between a good air filter and a velocity stack on the dyno.

Dude_Man

Can't wait to finish my exhaust an et this thing tuned! Messed around with my friends 190whp integra last night, pulled him from a roll by half a car. He shut down at about 80 because I was pulling more.

ans2k

I'm thinking about doing a 4 inch into a 3.5 inch or just 4 inch all the way. I currently have a aem v2 intake with a 80 mm throttle body and port match intake manifold. I currently put down about 235 whp. What do you guys think?