View Single Post
      01-31-2019, 03:30 PM   #5
Brett530
Second Lieutenant
Brett530's Avatar
177
Rep
223
Posts

Drives: '17 F30 340i
Join Date: Apr 2016
Location: Utah

iTrader: (0)

There are quite a few things that limit acceleration that might feel like transmission slip. The most likely thing is fuel limits. The JB4 can only deal with a few of these to try to trick the engine into giving more power. The real answer is to take a few logs with the JB4 and go over to N54tech and post them there. They can tell you what is happening.