I built a TP38, I used a KC S300 style turbine, a 1.0 A/R exhaust housing, 360 thrust bearing, ebpv delete tube, and a 66/88 billet antisurge wheel with an antisurge housing. I also ceramic coated the exhaust side from bellowed up pipes to ebpv and exhaust wrapped the up pipes and down pipe. Well, it makes about 16 psi WOT at about 2600-2800RPM empty on about a 4-5% grade in the 100hp position on a ts6. That is about what the old one made (which was mildly disappointing to see). It also starts making about 1-2 psi at about 1400 rpm, which is nice and the old turbo certainly didn't do that. I'm fairly sure it's on stock injectors, also likely the tunes are canned (tuner was in the truck when I bought it). Is the tuning keeping me from developing more boost? What is the fueling strategy for these trucks? Does it target a specific MAP at a certain RPM with a given throttle position and pull/add fuel to keep it at that desired MAP? Could my puny 90cc injectors do more, or will I not really see the boost numbers I am looking for until I get bigger injectors? (Trying to decide between 180/30 or 200/30). I am trying to hit about 28 PSi once I'm intercooled, so I'm guessing about 32-37 with the stock intake y-pipe. Thanks for reading this and for any input!