TCM reprogram
#1
#2
Interestingly enough, despite its widespread figment, no one’s hacked the the early version’s of the ZF 6HP26 however there’re aftermarket controllers for the later versions and 6HP28 but be prepared to spend big money. There’s a lot of info on Aussie forums regarding ZF automatics as well.
#4
I've cracked 6hp26, 6hp28, pre-2017 8hp for all Jaguar and LandRovers. All of those could be flashed thorugh OBD2, except for an early 6hp26 on a x350/x100/x200 - on those the TCM should be removed and flashed on a bench.
Actually Cambo already drives remapped 6hp26
Im not only modifying a shift points, but there's also a totally diffrent TC lockup schedule, torque interventions, pressures and lots of other stuff. For example on mine supersport there's almost 200 tables and variables which are totally diffrent comparing to a stock ones.
Actually Cambo already drives remapped 6hp26
Im not only modifying a shift points, but there's also a totally diffrent TC lockup schedule, torque interventions, pressures and lots of other stuff. For example on mine supersport there's almost 200 tables and variables which are totally diffrent comparing to a stock ones.
Last edited by MoscowLeaper; 01-26-2022 at 05:07 AM.
#7
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#8
The actual perfmance 0-100 on a public road became a bit worse - just not enough traction.
However - every shift is 350-400ms faster, so 1/4 mile and 100-200 improved by 0.5-0.7s
Also, the gearbox temp is much less and the fuel consumption became 1.5/100km less.
Also L322 ultimate (heaviest) 5.0SC with engine and trans tune makes 4.2s 0-100 (and still lot of wheelspin up to 40kmh)
However - every shift is 350-400ms faster, so 1/4 mile and 100-200 improved by 0.5-0.7s
Also, the gearbox temp is much less and the fuel consumption became 1.5/100km less.
Also L322 ultimate (heaviest) 5.0SC with engine and trans tune makes 4.2s 0-100 (and still lot of wheelspin up to 40kmh)
#10
Not only slippage, but i also avoiding partial TC lockup on supercharged engines.
TC stays unlocked which helps to rev faster to the rpm, where the torque is starting to rise. Then it's fully locked, since there's more than enough torque to pull a car.
Less heat, better milage, better throttle responce (like on manual actually). And the engine torque isn't dumped into a heat, but delivered to the driving wheels.
TC stays unlocked which helps to rev faster to the rpm, where the torque is starting to rise. Then it's fully locked, since there's more than enough torque to pull a car.
Less heat, better milage, better throttle responce (like on manual actually). And the engine torque isn't dumped into a heat, but delivered to the driving wheels.
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#15
#16
So what you're saying is that an unlocked TC heats up the ATF less than a locked TC? Or am I grossly misreading that?
#17
Not only slippage, but i also avoiding partial TC lockup on supercharged engines.
TC stays unlocked which helps to rev faster to the rpm, where the torque is starting to rise. Then it's fully locked, since there's more than enough torque to pull a car.
Less heat, better milage, better throttle responce (like on manual actually). And the engine torque isn't dumped into a heat, but delivered to the driving wheels.
TC stays unlocked which helps to rev faster to the rpm, where the torque is starting to rise. Then it's fully locked, since there's more than enough torque to pull a car.
Less heat, better milage, better throttle responce (like on manual actually). And the engine torque isn't dumped into a heat, but delivered to the driving wheels.
He first describes the stock tune, then compares the modified tune. At least that's how I took it.
#18
https://www.jaguarforums.com/forum/x...-1s-now-250319
With lockdowns, bad weather and a severe lack of free time, I haven't been back to the track since, but if traction issues can be resolved then half a second off the old times is within reach.
#19
Testing in May last year, my 4.2L XKR got 3/10ths quicker on the 1/4 mile.
https://www.jaguarforums.com/forum/x...-1s-now-250319
With lockdowns, bad weather and a severe lack of free time, I haven't been back to the track since, but if traction issues can be resolved then half a second off the old times is within reach.
https://www.jaguarforums.com/forum/x...-1s-now-250319
With lockdowns, bad weather and a severe lack of free time, I haven't been back to the track since, but if traction issues can be resolved then half a second off the old times is within reach.
0.3s is good and a goal of 0.5s is even better. Last time I checked, most of the big name TCM tuners only promise 0.2s.
I'll keep an eye on the thread to check any future progress.
#20