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StuOne19 StuOne19 is offline
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Posts: 5
Join Date: Dec 2021
Car: E90 335i xDrive 6MT
Default No boost after JB4 install - 12-19-2021, 02:14 PM

Hello, recently installed a JB4 on my N54 E90 335i xDrive. loved it on my N55 135. Did a WOT pull shortly after installing and got a CEL... no big deal, the ECU needs time to adjust, right? I drove ~25 miles and have had the same issue anytime I go WOT. Even under partial throttle, there doesn't seem to be any boost building. I had no issues prior to the JB4 install. I upgraded to the latest firmware and logged 2 runs -- CSV files are attached in the .zip. The first was map0 for a baseline, seems like no boost at all, second was map1 - no boost either. is it possible I disconnected something during install? I do not have the cowl reattached yet.

edit: only the 2nd log on map1 seemed to record the entire run
Attached Files
File Type: csv 211218_1100.csv (16.3 KB, 101 views)
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