So a friend of mine has a similar truck to mine. His is a 98 12v, completely virgin. Charger wound NOT light under about 1900. Every anti-tamper on the pump is/was intact. Turbine housing is a non-gated 14, only mod I can find. When the charger lights, there's a decent puff and the truck pulls hard and rolls off at 2600, as it should. I figured a little pre-boost fuel would have him spooling earlier and he would be happy with the power. He has gauges, but it's a work truck and generally runs 11-12k gvw, so a lot of fuel is out of the question. Upon getting the AFC removed, I find that it is full forward and the plate is also full forward. Odd for a stock pump? The 'smoke' screw was showing about 10 threads. I ran it in two threads shy of the stop nut. Kept everything else the same. Starts to light nicely around 12-1300 now and runs well. He has an updated ceramic clutch, fwiw. To the mat up a decent (15%) grade in 4th, it will touch 1500 at 31psi. Runs great, no complaints, but here's my question. Shouldn't my truck be similar? Before the 4kgsk, timing and vgt, my truck is not too far removed from his, except for a '0' plate. I hardly can't floor my truck. 3/4 throttle will net 40psi boost and 60psi drive. With the hx35 and stock timing, a 30psi boost gauge would be wrapped around in 3rd gear. Sorry for the long post, it's just that these two trucks should be so similar, yet they behave completely differently, and I'm referencing back to when I had stock charger, springs, timing, etc. The only known difference is the plate. Mine is homegrown 0, and here is what I found in his pump: Thoughts? Oh, his timing is definitely slipped, but I figured that would produce more bottom end and it really doesn't....
