View Full Version : Is OS 12593058 the red headed step child?
nonnieselman
June 29th, 2015, 08:10 PM
Im still gathering parts to do a LQ4/4L80E swap in my 2003 tahoe and having trouble finding a stock tune with that OS and with the LQ4/4L80E.
Ive already got COS3 on it now for OLSD tuning.
Gonna need the right tune before starting this swap.. ideas?
SPi
June 29th, 2015, 11:38 PM
Good luck. I am having some issues with swap as well. Nobody has been able to offer much help as of yet. https://forum.efilive.com/showthread.php?25705-4L80E-swap-H2-Hummer-very-sluggish This one really has me stumped so far.
w/t1500
June 30th, 2015, 01:39 AM
I have one for Lq4 with OS 12593058
Sylvain18583
joecar
June 30th, 2015, 02:58 AM
I never though we would find one (we have a 12212156 4L80E file, but it goes into a 512KB PCM only.
joecar
June 30th, 2015, 03:00 AM
I have one for Lq4 with OS 12593058
Sylvain18583Comments:
- WOT upshift/downsift MPH parameters are upside down.
- PT and WOT shifting is modified by the Throttle Kickdown table not being all 100%.
nonnieselman
June 30th, 2015, 12:50 PM
I have one for Lq4 with OS 12593058
Sylvain18583
Thanks W/T1500!
Do you know if this is a stock tune? It looks like it so far.
Lextech
July 1st, 2015, 12:56 AM
Here is a stock one.
Jeff
18586
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