Any ideas on a mod to keep A4 from downshifting?
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Teching In
Joined: Dec 2001
Posts: 387
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From: Southern IN, USA
Any ideas on a mod to keep A4 from downshifting? Keep the A4 in whatever gear it was in so it wouldn't downshift? Say you are doing 40, and you just want to get to 60 - not at a snail's pace, but not like a rocket; say 60% throttle. The computer unlocks the TC, at about 10% throttle, but at about 30% it downshifts one gear and at 50% it goes down two gears, a few jerks, a second of shifting, and then you go.
That LS1 can lug at WOT, and so why can't I get this with an AT - say stay in third an whatever throttle position? Also sometimes I DON'T want a neck snapping jerk, even though I am asking for 80% throttle. Surely the tranny and TC can take the low end torque??????
Would seem to be an easy mod - being the tranny is electrically controlled. It seems that there in no logic to "when" it will kick down - maybe even a kickdown delay circuit - need to find what the downshift inputs are specificaly to the ECM - Hey Delco folks, any ideas ?
That LS1 can lug at WOT, and so why can't I get this with an AT - say stay in third an whatever throttle position? Also sometimes I DON'T want a neck snapping jerk, even though I am asking for 80% throttle. Surely the tranny and TC can take the low end torque??????
Would seem to be an easy mod - being the tranny is electrically controlled. It seems that there in no logic to "when" it will kick down - maybe even a kickdown delay circuit - need to find what the downshift inputs are specificaly to the ECM - Hey Delco folks, any ideas ?
TECH Addict
Joined: Nov 2001
Posts: 2,003
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From: Live Oak, FL - in the woods where the creatures lurk.
Re: Any ideas on a mod to keep A4 from downshifting? Sounds like a simple thing made complicated:
Know how far to push the throttle down to achieve desired results....as you said, no lack of torque here.
(no offense!)
Know how far to push the throttle down to achieve desired results....as you said, no lack of torque here.
(no offense!)
Re: Any ideas on a mod to keep A4 from downshifting? The question is do you know what you want on a consistent basis? The TCC and shift tables key off of MPH and TPS. With Edit you can change that stuff to suit your taste.
