6.7l_clark
New member
Will there be any updates that will allow lockup tune per gear? That’s the only thing I find myself wishing I could still tune.
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Also interested in that too!
Will there be any updates that will allow lockup tune per gear? That’s the only thing I find myself wishing I could still tune.
Sent from my iPhone using Tapatalk
Lower the mph on your 4-3 and see what happensCan someone guide me in the right direction with what to specifically adjust. The problem is down shifting from 4th gear to 3rd gear is hard.
Lower the mph on your 4-3 and see what happens
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Are you talking about coasting 3-2 (no/low throttle) or throttle tip-in to force hard acceleration?I was having a hard time with that as well. Since the trans would downshift then hit lockup again. Made for a jerky deceleration, and if items in the bed weren’t secured they would be jarred loose and slide to the front. No fun.
The way I fixed it I tuned my 4-3 down shift to happen at 38mph, which is also under my lockup tune line at 20% throttle input, so it unlocks and grabs third unlocked. It won’t lock again until I get above 48-50mph at 20% throttle input.
I have a tuning question too since we are on the topic, why is it that the ant eater won’t command a downshift until my Motor starts to make an effort? My 3-2 downshift seems delayed and when it does decide to shift down its right in the middle of making torque so it hinders acceleration by dropping a gear then almost immediately shifting up again. Originally I thought this was because my 2-3 shift line was too flat and I had several values that were the same (for example, three 25mph upshifts at 40,50,and 60% throttle input). Now I have them spaced at least a couple mph to make a nice linear graph, but still has the same issue, just not as pronounced.
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Are you talking about coasting 3-2 (no/low throttle) or throttle tip-in to force hard acceleration?
At face value this sounds like a throttle valve setting symptom
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It keeps the controller from downshifting and then immediately trying to upshift again. If you look at most tunes, the 4-3 downshift usually occurs at a higher speed than where the 3-4upshift is programmed, so electronically there is an area where it could upshift and downshift repeatedly at the same wheel speed.
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I was having a hard time with that as well. Since the trans would downshift then hit lockup again. Made for a jerky deceleration, and if items in the bed weren’t secured they would be jarred loose and slide to the front. No fun.
The way I fixed it I tuned my 4-3 down shift to happen at 38mph, which is also under my lockup tune line at 20% throttle input, so it unlocks and grabs third unlocked. It won’t lock again until I get above 48-50mph at 20% throttle input.
Sent from my iPhone using Tapatalk