a NOOB so I have questions.
#28
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go to Holden crazy and find a 2002 2500HD tune.. OS is 12212156
flash that in, check gear ratio and stuff first..
gotta do a Full Flash tho!!!
see if it runs any different if the truck is still bone stock.
flash that in, check gear ratio and stuff first..
gotta do a Full Flash tho!!!
see if it runs any different if the truck is still bone stock.
#30
Well small update. I cut off the muffler today and ran pipe to the back axle so far. It seems to have helped the knock except for 80-90 mph. I didn't log and only used my torque scan on my phone but it seemed to agree very close with EFI live yesterday. I am still getting 6+ degrees at high speed but the 50-60 issue is gone on 5-7 pulls today. Does that make sense? Does that lead to anything being more of the possible culprit?
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09-12-2015 08:19 PM