Yes, running stock injectors and L67 sensors. The L67 PCM was enhanced by Intense for the mods originally done to the L67 (3.4 pulley, 1.95 rockers, fwi, colder plugs, 180 stat). I now moved down a step to a 3.5 pulley in the L32 and added headers. I was thinking same thing with the lean issue initially until I later heard the valve rattle. I even had one brief run-on situation on a warm day (lasted about one second when I turned ignition off, but recognized what happened instantly), which takes me back to the timing issue - seems even at idle with stock injectors engine should not run-on unless timing is either too high, fuel quality is poor or engine overheating. Temp was 185-190 at the time on a 75 degree day, so nothing atrocious and running 93 octane fuel. We're going to start by re-torquing the knock sensor - if no luck, replace with new one. Will also double check the wires. etc. If no luck, will come back on here. Not sure what you mean about soldering the regulator/return line - do you mean eliminate the return line? I'm not sure about that unless I run a corresponding pump/regulator built for no return line (that's how the L32 is right?). I was thinking about eventually replacing the 90k mile factory fuel pump with a newer one, but not sure what best brand/quality/type should be yet (mine seems fine now, was planning to replace just as insurance).
