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      03-23-2019, 06:57 PM   #1
Rollup
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Flashed JB4 Backend => Now runs at 10psi of boost?

On my journey of discovery for my third owner 2008 135i, I found a JB4. Thinking it would be a good idea to update the firmware and add a backend flash, I followed the instructions on the n54tech forum, and did just that without issue. I flashed the JB4 BEF "JB4_IJE0S_PUMP". The car previously had MHD stage 0.

Running on map 2 (unchanged from before the BEF), the boost now peaks at ~15psi then gets pulled back to 10 psi - see the attached log screenshot. This happenned consistently. Does anybody know what might be causing this? Have I stuffed up a setting?
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      03-23-2019, 08:34 PM   #2
spang135
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Did you remember to change your steering wheels controls to 4 2 back end flash mode?
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      03-23-2019, 09:27 PM   #3
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Quote:
Originally Posted by spang135 View Post
Did you remember to change your steering wheels controls to 4 2 back end flash mode?
I didn't! Let me do that and run another test.

Thanks for the feedback.
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