Check out my tune and tell me what I did wrong!! I have a 2003 GMC Sierra 5.3, drop in K&N, cats removed, 3" flowmaster with turndown... Someone Please help me modify my tune!!! also a data log...
Shifts to soft from 1>2... HELP!
Check out my tune and tell me what I did wrong!! I have a 2003 GMC Sierra 5.3, drop in K&N, cats removed, 3" flowmaster with turndown... Someone Please help me modify my tune!!! also a data log...
I looked at the tune you posted and there were a lot of changes to the tranny but most of them were only for the "Performance" part of the tune. Is your 1>2 shift soft even if you hit the tow/haul("Performance") button?
It seems you removed all the Torque Reduction and Shift Times in Performance but did nothing in the Normal cells.
Also, you increased the 1>2 Trans Pressures very slightly in the Normal mode and a lot more in Performance mode. Your 2>3 Trans Pressures were decreased slightly in the Performance mode in the middle cells.
So you really have not done much to the 1>2 shifts under Normal mode.
BTW, you probably should have posted this in the tranny section.
My bad... I didn't know there was a tranny section!! LOL... Yes i was running it on tow/haul mode... I'll move this thread over to the tranny section... you can write back there
Help on 1>2 shifting... PLEASE!!
Check out my tune and tell me what I did wrong!! It shifts good, but soft and i can definitely tell its slipping in the shift. I have a 2003 GMC Sierra 5.3, drop in K&N, cats removed, 3" flowmaster with turndown... Someone Please help me modify my tune!!! I could also take some advice on timing and afr... heres my tune and also 2 data logs, 1 with 0% tq managment and 1 with 10% tq management...
Just look at the file name.
Moved/merged.
MAF seems to peak out at ~210 g/s...
This means PCM's torque calculation will be low, which means pressure will be low.
Log TRQENG.
Have you thought about putting in a vette servo and shift kit? If your tranny is already slipping then I would think hard about doing anything.
This might sound stupid, but what do you mean by: Log TRQENG. ???Originally Posted by joecar
TRQENG is a PID for Engine Torque, select in the Scan tool when you go to log (keep channel count to less than 24).
Ive made a few changes to your file in the trans section, take a look and see what you think. They will just point you in the correct way, I just bumped the line pressures by 10% but you will probably want to fine tune them.
~Erik~
2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.
On the PIDs tab, locate the pid TRQENG (click on the Caption column heading to sort on that column), and select it.... then when you log data from your vehicle, TRQENG will be included in the log data.
TRQENG does several things:
- it is the link pid into the shift pressure tables in the tune file,
- the PCM uses it to calculate/lookup pressure when not shifting.
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