It's a special FP housing. I don't think they publish the sizing.

 

What was his boost level? I guessing 28 psi plus???

 

looks like my maf is taken a dump at about 500whp when i hit about 7000rpms so im going to make sure none of the fins are bent...ill be going to aem soon enough so it doesnt matter but if i didnt have the hicup at 7000rpm i bet id hit 520plus whp

 

ok, one more time.

how much boost when you hit 501whp and what kind of gas?

 

Post #28 answered this ! 114 oct. dont know what boost tho.

 

not running tonight then?

 

ill be there!!! lol still taken bets on my tranny?

 

well, did you get the new clutch?

if so.... gosh i'm not sure what will happen, but i assure you, i'm gonna be there to see it!!

 

tonight should be fun...what time is everyone going?

 

i wont be making it down tonight. hope all goes well. post em up when you get in tonight paul. i predict a 11.8x at 12x.xx good luck ya'll and dont break anything.

 

Why would you immediatly think it's the turbo and not the volumetric efficency of the motor dropping off? Stock intake manifold runners aren't going to be tuned to make power past that, so torque is going to start dropping off, and when torque drops at a faster rate than RPMs are rising HP drops.

 

I've looked at the turbo, and it does have a smaller hot side than what I would expect. That may be why it is struggling at the top end due to the end of its effeciency range...or it could just be the maf restriction. Paul will have to chime in on the boost but yes I believe it was 28-30 psi area with race fuel. No meth.

Anymore questions?

 

well i did 121 thru the 1/4 and 11.8 i was spinning all 4 tires all the way thru 3rd gear lol the car would lift up and you could see smoke from all 4 corners ...but im thinking my maf sensor is hurting me in 4th gear at 7000rpm ...when it was hott it was miss fire then when the temps came down no miss fire so im guessing my maf
also my tires are at 40 psi and have a 430 treadwear rating
im going back to pir sat and lowering my tire psi to 18-20 psi and chaging my filter to a more flow thru filter

 

White evo at pir?

 

yup lol the 99 decible one