Yeah if its not locked the vaccumm and rpm will change as you change the timing, which will shift the cell the ecu is reading from, or make it jump between 2 of them.. Even with it locked, it might just be Graham's car, but it still jumps around quite a bit it seems with the lt-8, where as everyother ecu I have seen its rock steady when locked..I have played with the CAS from his car, and it generates a good clean signal, so I don't think its his cas...Max

 

Thanks. I am experiencing a Primary FI leak right now, this Is with new Upper/Lower Grommets and O-Rings. I probably didn't lube up the O-Rings enough before I slipped them Into the Fuel Rail. No problem. I have new O-Rings at hand and I'll get to It before the timing today.

I'll settle for 1000rpms @ Idle until I fully break In my Motor which will probably be by Springtime. After that, I'll do a little tinkering.