I missed what throttle body size you have on the setup. Could a larger tb help keep boost from building up too high? What about the tb gasket itself? I’ve seen those sometimes even smaller than the bore of the tb.
Timing I believe was set at 22 on last run..he was running the base 20 and said he was going to add a couple degrees.11.8 is rich best torque..... it is safe but running that rich leaves alot on the table. 12-12.2 AFR usually best power, what's the timing at?
Thanks - that seems to be my problem...no matter how much fuel we try to add it keeps leaning out in boost.I had a similar issue last summer. Was running a 320 lph pump, sn 95 fuel rails, 80 lb injectors, 3/8s feed line. Would lean out in boost no matter how much fuel i added. Turned out to be the fuel was cavitating, dropped in my old 255 lph fuel pump, solved the problem. The 340 lph is way too much pump for a a stock return line imo. Im thinking its a cavitation problem. Also with 340 lph pump a hot wire upgrade is always a good idea to insure the pump is getting proper voltage.