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Today I'm tuning my X5d's trans with sutphin's tune! I've only heard great things, so I'm going for it. The oem tune on the tcu is a load of buttocks.
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'10 X5 35d- 279k mi, deleted and DUDMD stage 2, daily and tow vehicle
'01 330i- Drift car: SLR Super angle, BC coils- keep it simple
'07 335i 6mt - Sold @ 171k miles- stage 2 daily commuter for 2 years
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