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      02-28-2021, 05:52 PM   #10
StLMO
Private First Class
United_States
21
Rep
124
Posts

Drives: 2003 M5, 2015 Z4 35is
Join Date: Mar 2011
Location: St. Louis, MO

iTrader: (3)

Garage List
2017 BMW 540i  [0.00]
2003 BMW M5  [0.00]
2015 BMW Z4 35is  [0.00]
No experience with xhp for the dct. Heard issues with the software so I left it alone, the dual clutch shifts plenty fast for me. Friend has xhp on his 335 and likes it but his is an 6 speed auto transmission.

Would suggest some preventative maintenance before pushing the car hard like walnut blasting to clean the valves. I did it at 40k and it was pretty bad. Also plugs and coils, consider one step colder ngk plugs. Good luck.
Appreciate 0