Still have my low RPM ping!!!!!!!!!!!!
04-28-2004, 07:50 PM
#3
Staging Lane
Join Date: Apr 2004
Location: Selma, AL
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i got some bad gas this time and my truck pings when I get on it. try runnin some octain booster or a higher octain through it one time....that cured mine when I was runnin 87 and b4 the westers tune.
04-28-2004, 11:04 PM
#6
Performance Trucks Sponsor
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I see this quite a bit when a truck or car comes into the shop, I update gm's calibration (flashing the pcm) and that usually takes care of it.
This will probably mess up your edit , so instead you may want to find a new cal with the same segment and load that into your pcm.
later,
allen
This will probably mess up your edit , so instead you may want to find a new cal with the same segment and load that into your pcm.
later,
allen
04-28-2004, 11:09 PM
#7
Did you remove your EGR system (or alter the pipes)? 
Your best bet is to get a PCM from a newer truck than your 99 model. The 99s are horrible about knock, ping, and sluggish performance. You'll find that even with doing everything in Edit, the 99 tunes aren't as good as newer ones. But like Allen said, that may mess with your LS1 Edit locked cable.
Your best bet is to get a PCM from a newer truck than your 99 model. The 99s are horrible about knock, ping, and sluggish performance. You'll find that even with doing everything in Edit, the 99 tunes aren't as good as newer ones. But like Allen said, that may mess with your LS1 Edit locked cable.
