View Single Post
      09-24-2020, 08:15 PM   #52
//TMT
Lieutenant
//TMT's Avatar
United_States
129
Rep
419
Posts

Drives: 2020 X2 M35i, 2005 Volvo V50T5
Join Date: Sep 2019
Location: Eastern Massachusetts

iTrader: (0)

@xcelir8bmw quick question...

What brand and octane rating do you run in your X2, and have you changed it lately?

Reason I ask is the TDI seems to want RON 97, which is roughly US AKI 93. If the engine isn't adapted to this, it will pull timing and alter the fuel map to avoid detonation. This can really mess up the tuned behavior.

I'm surprised disabling the pedal mapper made such a big difference. The TDI box and pedal mapper really don't interact at all, electronically or operationally. But I guess a rapid, unexpected throttle surge can cause strange things as maps shift from low-load to high-load quickly.
Appreciate 0