Another update on my never ending build. About 2 months ago I got bored and decided to take off the prothe GT15 clone and install a vw K24 I had purchased from a member here.
Leaving the pump and MBC setting as they were with the GT15, I could rev to 2500-3000 in neutral and not make any boost (just a little turbo whine). Took her for a test drive and got a big surprise.
The K24 starts making boost at the top of 1st gear and by the top of third it hit 25 psi so back to the shop to turn fuel and MBC down. I now have fuel screw in about 1.5 turns in from hanging throttle
and boost controller set 1 turn in from spring/ball being loose. It will still make 20 psi by the top of 3rd but now I have to really stay in the throttle to get egt's over 1200F. Overall I like the K24
over the smaller GT15. Cruising at 55= 2-3 psi and not near as much lag as I expected. Also went from 2" straightpipe to 2.5 downpipe only