I have been working on a fairly large tune for my 06 LBZ, and cannot get it to stop de fueling between full throtle shifts. I have my torque tables maxed at WOT and fueling it over 4000rpm and shifting between 3800-4k. Any ideas? I really need it to turn up as high as I can for truck pulling, but CANNOT have it fall on its face to shift.
2001 2500HD 8.1 Ally, HP Tuned by me, BD Shift Kit, Comp XR270 Cam, No cats, dual Flowmaster Super 44's
Well I think I might have just anwsered my own question. In Trans Diag. I raised the CMD Gear RPM's. I'll test it tomorrow to see if that fixed it... Fingers crossed!
2001 2500HD 8.1 Ally, HP Tuned by me
Well its still de-fueling badly between first and second. Any other ideas?
2001 2500HD 8.1 Ally, HP Tuned by me
Im having this same issue right now on a customers truck. 1-2 shift wont go over 3K at WOT, it will finally shift though.
post the tune up
Andrew
2006 Duramax ECSB - Banks Monster Dual Exhaust, Tie Rod Sleeves, Kennedy Twin Deluxe Lift Pumps, Edge Insight CTS with Pryo, EGR Blocker Plate, PVC Reroute, Suncoast Stage 5 trans with 1056 triple disk converter, Cognito Steering Braces, PPE Race Valve, LML driver side exhaust manifold, AFE Boost Tube, Stock Drop-in BatMoWheel, ProFab Performance 3" Downpipe, Other mods along the way, TUNED by ME... Way too much fun
This tune is nowhere near stock tranny safe, and EGT will easily go over 1600 when held open in higher RPM.
Last edited by 8LugChevyThunder; 11-23-2012 at 06:35 PM. Reason: Removed tune attachment
2001 2500HD 8.1 Ally, HP Tuned by me
Just made it work... Do not raise fuel rate MM3... Only PW. Just shifted 1-2-3 at 4100 burning the tires without missing a beat.
2001 2500HD 8.1 Ally, HP Tuned by me
You could also command the shift sooner - lower speed.
how much more did you raise your PW like what percentage more???
50-60% more PW up top and just a small increase in torque based fuel.
2001 2500HD 8.1 Ally, HP Tuned by me
50-60% pulsewidth is huge... and I mean huge. I would dial that back some as my truck is able to make 520 rwhp with only 35% increase...
Andrew
2006 Duramax ECSB - Banks Monster Dual Exhaust, Tie Rod Sleeves, Kennedy Twin Deluxe Lift Pumps, Edge Insight CTS with Pryo, EGR Blocker Plate, PVC Reroute, Suncoast Stage 5 trans with 1056 triple disk converter, Cognito Steering Braces, PPE Race Valve, LML driver side exhaust manifold, AFE Boost Tube, Stock Drop-in BatMoWheel, ProFab Performance 3" Downpipe, Other mods along the way, TUNED by ME... Way too much fun
Did you increase torque based fuel quantity?
2001 2500HD 8.1 Ally, HP Tuned by me
There is a table to adjust de-fueling. It has to do with maximum allowed torque reduction if I recall. I can look later when I get home if you still cant find it.
2006 LBZ Duramax
5" Magnaflow turbo-back
EGR blocked
HP Tuned by yours truly
Yes please find that table. The only one i can think of that you may be talking about is the PEAK TORQUE.Originally Posted by Johns98TA
Sorry for the late reply. If you havent figured this out yet, here is where you need to go:
transmission>torque management>torque reduction request>DC Max = [enter new value]
Assuming you wanted to limit defueling to 20% compared to the stock limit of 90%, you wound enter a max value of 20%.
2006 LBZ Duramax
5" Magnaflow turbo-back
EGR blocked
HP Tuned by yours truly
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