ATS sells a factory turbo upgrade kit, comes with a better exhaust housing for the turbo, and a 3" downpipe. Around $800 if I remember right. When you do that (if you do I should say
), and you have the turbo off, drill one of the exhaust manifolds for a thermocoupler for a pyro. Start the truck up for a second, for chits and giggles (sounds like a crappy big block gasser open exhaust manifolds
, I know I did this when I did a turbo install, I didnt get on it though, should have
), and to get all the metal out of the exhaust manifolds so it wont go into the turbo when you put it back on. Then put the turbo back in. Install a pryo, a boost, and if your truck is an auto, a trans temp gauge.
Once you did that, turn up the IP. To do this you have to take the triangular cover off the side of the IP (from the passenger side look at the IP, its towards the back of the IP, and down in the valley pan area). Take two of the bolts of, and loosen the other so the plate can swivel, but doesnt come off, which is a PITA if it does. Rotate the engine until you can see a allen screw in there, 5/32" I believe, use a good allen wrench (cause its locktighted, and you dont want to break anything off in there). Tighten it in to increase fuel. I would turn a 1/4 turn at a time, then watch the pyro, dont go over 1200* for very long.
Thats about all you can do, unless you wanna go crazy. You can get a better pump (the moose pump, pm me if interested). I dont recomend DPS stuff because of really, really bad customer service. Stock G code injectors (injectors out of factory turbo IDI's) are good enough for flow, but if you want more power pm me cause I know this guy who will make you a set of nozzles that flow more with a good spray pattern, but they are around $800
.
Hope that helps.