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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > xHp before or after valve body oil change and adaptation



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      06-30-2024, 02:28 PM   #1
Ml3456
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Drives: 2018 X1 & 335i E93
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xHp before or after valve body oil change and adaptation

2013 E93 with 58,000 miles. Going to to a oil, seals, and solenoid change on my Alpina tranny being 11 years old. Solenoids aren't bad but changing because I'm right there.

Going to do the xHp firmware update. Looking for any recommendations if I should do it before or after the oil change/adaptation.

Thanksm ML
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