View Single Post
      10-27-2017, 10:34 PM   #21
jwebb335xi
Major
United_States
197
Rep
1,070
Posts

Drives: 2008 335 XI
Join Date: Jun 2014
Location: Chicago Burbs

iTrader: (0)

Quote:
Originally Posted by milfriez View Post
Well this morning, after the car started bucking again on the way in to work, I changed JB4 to MAP0. The poor driving still existed, which leads me to believe it is not a problem with the JB4, but a mechanical issue.

Coils/Plugs won't arrive until Monday now, so I guess I'll check this weekend to see what condition they are in, and then possibly replace next week.
If one or both 02 sensors are bad, could the car be requesting too little or too much fuel, flooding or starving the engine if only for a split second?

In MHD, there is a setting for non standard 02 sensors that could be used for single turbo. If you run the car with that setting, it will exhibit "similar" bucking...

Just a thought.
__________________
JWebb335xi

MHD / Wedge / 93 Octane/ xHP / FMIC / Inlets / Catted DPs / CP / DVs
Appreciate 0