[Relentless]

hi, i have a march 2011 525d and was interested to know if the car can be remaped/chip tuned.
after reading a few post's i find that the 8 speed auto box in the car is rated for a max 500nm of torque and the 530d is 700nm. does anyone know if this is correct?
has anyone also remaped their 525d?

[FrankyD]

Your auto gearbox, is it sports or normal?

Originally Posted by Relentless

hi, i have a march 2011 525d and was interested to know if the car can be remaped/chip tuned.
after reading a few post's i find that the 8 speed auto box in the car is rated for a max 500nm of torque and the 530d is 700nm. does anyone know if this is correct?
has anyone also remaped their 525d?

[Relentless]

it's the normal auto

[robgus]

Are you sure? I'm considering hartge tuning for my 525d and they say it's well within limits. With hartge you get 535NM and about same numbers with ACS. Doubt they will be outside the tolerance.. Anyone can confirm?

[Relentless]

List of ZF 8HP variants

name max. gasoline torque (N·m) max. diesel torque (N·m) example
8HP30 300 300
8HP45 450 500 BMW 5 Series (F10)
8HP70 700 700 BMW 7 Series (F01)
8HP90 900 1000 Rolls-Royce Ghost[12]

the 525d has the 8hp45 and the 530&535d have the 8hp70 auto transmission

[Thomas the swede]

Last replay in 2011.. time to revive this thread. =)
I have been looking at a engine remaping for my 525d 6cyl that bring the original 204hp/450Nm to 300Hp/620Nm. I have the 8HP45 transmission. What will happen to the transmission with that mutch torque ? And can it at least handle 550 Nm? if I run into a cheap 8HP70 transmission, is it possible to upgade my car to a 8HP70 transmission ?

[Hasser]

Originally Posted by Relentless

List of ZF 8HP variants

name max. gasoline torque (N·m) max. diesel torque (N·m) example
8HP30 300 300
8HP45 450 500 BMW 5 Series (F10)
8HP70 700 700 BMW 7 Series (F01)
8HP90 900 1000 Rolls-Royce Ghost[12]

the 525d has the 8hp45 and the 530&535d have the 8hp70 auto transmission

also the activehybrid 5 (F10 LCI) has the 8HP70H - specific for the hybrid as stock torque is 450nm so is capable of 700nm max, which is good to know as I just fitted a BMS stage 1 and the torque will now be over 450nm