m4 dif swap wheel speed impermissible deviation

Timevampire · 10-24-2023, 01:29 AM

Hey guys, I recently swapped out my 435i 3.15 diff for a m4 3.46 diff and have been getting drivetrain codes because the ratio of output shaft speed and wheel speeds have changed. Is there a way to program in the new ratio?

Thank you

JuniorTech · 10-25-2023, 09:03 AM

you need coding in some ecu

TheNine90 · 11-04-2023, 09:43 AM

Quote:

Originally Posted by Timevampire

Hey guys, I recently swapped out my 435i 3.15 diff for a m4 3.46 diff and have been getting drivetrain codes because the ratio of output shaft speed and wheel speeds have changed. Is there a way to program in the new ratio?

Thank you

You can compare the data between the two and check the differences that relate to the diff

10-24-2023, 01:29 AM	#1
Timevampire Enlisted Member 57 Rep 30 Posts Drives: 435i, delta integrale, turboLS Join Date: Jun 2023 Location: Socal iTrader: (0) Garage List 2015 bmw 435i [9.00]	m4 dif swap wheel speed impermissible deviation Hey guys, I recently swapped out my 435i 3.15 diff for a m4 3.46 diff and have been getting drivetrain codes because the ratio of output shaft speed and wheel speeds have changed. Is there a way to program in the new ratio? Thank you
	Appreciate 0 Tweet Quote

10-25-2023, 09:03 AM	#2
JuniorTech Private 25 Rep 88 Posts Drives: F30 340i Msport & G05 X5 40i Join Date: Mar 2014 Location: Indonesia iTrader: (0)	you need coding in some ecu
	Appreciate 0 Quote