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sprinkles08, ASE Certified Technician
Category: Transmissions
Satisfied Customers: 22659
Experience:  Chrysler/Dodge/Jeep master tech ASE Master and Advanced Certified, Chrysler/Dodge/Jeep Master Certified, Trans Specialist
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Bmw x6 i50: I have BMW x6 4.4 v8 eight-speed automatic transmission.

Customer Question

I have BMW x6 4.4 v8 eight-speed automatic transmission. I install cat-back and engine software-boost upgrade. so the car have 579 FT-LBS. The qation is can the trassmation handul the high torqeu.
Submitted: 2 years ago.
Category: Transmissions
Expert:  sprinkles08 replied 2 years ago.
Hello and welcome to Justanswer!
The ZF 8hp70 transmission in your vehicle is rated at a maximum input torque of 700 NM, 516 lb ft. At 579 lb ft you're over what the transmission was designed for, but longevity will depend on how it is driven. If driven moderately then you should be fine, but if it was subjected to regular drag racing or similar hard use then it most likely would not hold up.