Originally posted by XtremeRS Yeah even my secondaries are farther up in the stream, on the upper plenum..very doubtful that placement is the issue. If its not exhaust contaminating the intake charge, then I just don't understand my EGT numbers being that high at an 11.0:1 A/F ratio at 15 psi.. As far as timing, once the map sees WOT(0 psi) it goes to 17 degrees, BUT when going WOT(TPS sees full open) timing starts at 17, quickly drops to around 13, then steadily increases to a max of 20 past 5500 rpm or so up to redline. I guess retarding the timng a few degrees at 4000-4500 at that higher boost pressure, may work better than just dumping in fuel. I did the same thing Jason, dumped in a bunch of fuel at that rpm, and i could feel the motor bog a bit with that much fuel...still pinged a bit too..We really need to log A/F vs RPM on a dyno, but even still, its such a fast, short ping, it may not even be noticable if its due to a sudden short instance of going a bit too lean..