QD32 Turbo Progress

[tweak'e]

ive got the Schwitzer on my qd32 aswell and its a slug, has a 7.5psi spring in it and it tops out at 9psi at 3 grand, makes 1-3psi at 1-1500rpm which is ok, 2000 its making around 5-7, and by 3000 its overboosting but its only an extra 1.5psi so no biggy, not winning any races thats for sure, i think its probably making less than 120hp. im thinking about putting a boost tee on it and seeing what the schwitzer will make but i think shes pretty much out of huff and puff at 10psi might squeeze 12-14psi at 3 grand but i doubt the low rpm boost is going to change, might need to dump a bit more fuel in aswell

boost on its own won't do much.
fueling is key, however you can't let EGT's get to high. egt gauge is a must.
i also highly recommend an intercooler. it will do more than what increasing boost will do.

 

[Mortalcabbage]

Shoehorned a XR6 intercooler from eBay into mine. Running similar pressures to QD32pig's with a half turn of the screw. Highway cruising around 350 in the dump, can get high 400s full throttle going up hill, only close to 500 if I let revs drop.

 

[Mortalcabbage]

Also when I replaced my stock radiator with a full alloy 3 core, also eBay, egts dropped about 50. This was before I got a intercooler.