LS1-450

iTrader: (33)

, Unfortunately, & often times this is the case.

Have read many, many posts on here where guys using the XER lobes have corrected this issue by swapping lifters, as has been noted above. I don't recall which lifters, but, am sure this can be answered by searching "XER lobes," "cam trouble," or something similar. Good-luck

prokilllsx

Thanks guys. I'm not sure what the MAP reading does. That's a question I'll have to ask the tuner.