Thread: Another pull-through vs blow through

your right
with that setup and 9 psi, it wouldn't restrict 40whp

On this particular setup, he made 191whp after relocating maf back to pull-through. Did 2 pulls on blowthru and 2 on pullthru. BIG difference. The setup wasn't optimized on the blow thru setup, but still the car made more power just by changing maf positions. You will see on the graph the car runs absolutely pig rich on the blow thru and pegs the wideband at under 10:1 AFR. On the pull thru he was right in the sweet spot of 12:1.

nice
guess i'll be keeping the pull-through

Also, it should be noted that since the turbo is on its way out the boost hits 9psi and falls back off to 7. I am betting with an optimized setup and good turbo he will be in the range of 230whp on 10psi or so. Still made 203 torque though...

Next up is my car. I will be doing the same thing on back to back runs!

i ran stock exhaust with 3 inch downpipe on my t25/s4 setup and it killed my power all over the place

Dude you cant make the assumption that pull through its better than blow though if you are using a bin that was tuned one way and you are using it the other you need to tune the bin for the different setups... Maybe on your car pull through works better because JWT tunes are designed that way....

+1 ^^

I have the oposite experience.

interesting...
guess i'll go with blow-through now probably lol

Very interesting! Keep us posted with your numbers