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Brian

we will never know unless we get some TCM's and figure out how to pull the data and solicit folks like the guy that did the reverse engineering on the SCI/CCD bus.

im going to reach out to him...

there is a patent doc talking about various chrysler ecu's outputting a version/engine code to the TCU (via the CCD bus?) so that the TCU selects a different set of shift programming..... i wonder if...

it has to be different for different power levels because you have 2 different events that have to mesh and more power is going to lengthen the time it takes for the clutch to apply. on a naturally...

i was wrong... it was 15 passes.

Brian

I thought the number was 37.... but it has been years.

Brian

Steve had like 40 passes on the gearbox at that power with no signs of stress.

I dont care if i have the fastest car in the world cause that's impossible. I just like ripping around cause its fun...

Yes i know that the shift timing is CRITICAL. thats why the controllers had adaptives to dial in the shift over time and keep it shifting the same way... at least till the CVI reaches their limit.
...

anything can be upgraded. anything.

it just hinges on the eagerness of those involved and how resourceful they are.

if everyone gave up so easily, we wouldnt have flashable ECU's and...

I wish..... id love a 2.4 with a hard hitting A604 with AWD in my reliant.

Brian

yeah he made valve body adjustments that TCM had to reprogram into their shift controller to get the shift timing right again.

all of the features would be wasted time if shift speed cant be...

those are the adaptives that adjust shift timing to account for wear that i was talking about earlier.

the megasquirt based shift boxes and the TCM box that racerstev used dont have these...

the ultimate downfall of the 604/41TE in a high horsepower application is the slow speed of clutch engagement/disengagement during shifts when the trans controller is calibrated for factory specs (ie...

ooooh. progress.

i know its early, but has anyone seen anything that could lead to shift speed increase?

Brian

looks like rockauto lists that transmission range switch (the neutral safety switch looking one) up to 95.

so that means that i could possibly use a 95 stratus box on a 2.4 with AWD. that would...

So in anticipation of this, what tcu would be good to obtain? 89?

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And also, in guessing the 2.4l versions of this gearbox had a different transmission range sensor. I...

pretty cool none the less.

that 604/awd stuff i have laying around may get some use after all.

Brian

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