How do I use tow/haul mode on my swap
#1
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How do I use tow/haul mode on my swap
I'm swapping a 5.3/4L80E in my Mustang and I was curious about if I could use tow/haul mode to have the trans shift differently. I'm using a PSI harness and 411 PCM, thanks.
#2
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If the donor PCM / harness / tune was set up with
the dual mode (as many trucks were), then, yes.
But question is, do you really want Grandma and
haul-*** modes, both? Or just one that gets it done
the way you want? Whatever you want, wants tune
file fiddling. Tow/Haul is just letting you have two
options selectable.
the dual mode (as many trucks were), then, yes.
But question is, do you really want Grandma and
haul-*** modes, both? Or just one that gets it done
the way you want? Whatever you want, wants tune
file fiddling. Tow/Haul is just letting you have two
options selectable.
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Tow/Haul has to be enabled in the tune. Then you will give pin C1-71 a MOMENTARY Ground to activate T/H. If you give that pin a momentary ground again or turn off the key---T/H will be cancelled.
Jeff
Jeff
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#11
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Could another shift / tune /profile be enabled through one of the trans shifter detents? I have an 2007 (Gen IV) L92 and 6L80 / e38 / harness from an escalade / Denali but without the BCM. The stock trans shifting tune is very conservative.
I know many vehicles have a sport mode enabled by moving to another detent on the trans. Was thinking I'd have an economy mode and sport mode which would use higher shift points, etc. I personally don't think I'd use TU / TD functionality often.
I know many vehicles have a sport mode enabled by moving to another detent on the trans. Was thinking I'd have an economy mode and sport mode which would use higher shift points, etc. I personally don't think I'd use TU / TD functionality often.
Last edited by DW SD; 03-31-2014 at 12:55 PM. Reason: oops meant Gen 4 not 6
#12
Jeff knows what is up!! I do have one question Jeff, does the tow haul mode change the whole program or just "some" of the perameters?? Corey and I are discussing tuning options, and we need this one item resolved to continue the "THINK TANK" that is in progress.
#13
TECH Resident
Great research!
I'm assuming you could use tow / haul for a sport parameter rather than just towing? In short, you could reprogram the entire trans profile?
Is pin C1-71 to the main ECU - OR? Or to some other module I don't have a BCM in my application.
I'm assuming you could use tow / haul for a sport parameter rather than just towing? In short, you could reprogram the entire trans profile?
Is pin C1-71 to the main ECU - OR? Or to some other module I don't have a BCM in my application.