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Barnette335i Barnette335i is offline
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Car: 2007 335i e92
Default No boost on any map after jb4 install - 01-18-2020, 06:42 AM

I recently installed a new(from bms) jb4. I had no boost leak codes or boost issues prior to jb4 install. I took the car out for a test drive after installing the jb4. I let the car warm up, switched to map 5 and punched it. No boost and 30FF code. Tried map 1 same effect. Tried map 0. No boost code , but still no boost. I updated the firmware still no boost. I added my logs. Am I missing something? Thanks.
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Barnette335i Barnette335i is offline
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Default No boost after install. Check my logs! PLEASE HELP!! - 01-18-2020, 05:25 PM

Just installed a new JB4 from BMS. I have no boost. Took out the JB4..boost came back immediately.
2007 e92
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Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Default 01-18-2020, 11:02 PM

What is your tach set to? Double check that it is 4/3 (doesn’t appear you are running a BEF).

I’d also double check all wiring / make sure a harness isn’t flipped.

Combined your threads- no reason for 2.


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Last edited by Dave @ BMS/Fuel-It!; 01-19-2020 at 09:03 AM..
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Rushan Rushan is offline
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Default 01-19-2020, 04:49 AM

Quote:
Originally Posted by Barnette335i
Just installed a new JB4 from BMS. I have no boost. Took out the JB4..boost came back immediately.
2007 e92
did you follow the user settings? check the jb4 installation and user setting and make sure its set correctly.


09 E92 335i - Hot-Climate Middle East package, M Sports suspension, 19" Rims, 6AT fully built internals, bushings, raybestos clutches and sonnax with xHP stage 3, Differential lockdown, New RB Turbo CHRA, JB4 - Map 3 70 adder with N20 TMAP - MHD BMS Race Flash with Tuned Duty Bais and PID - BMS Oil Cooler Valve - RB PCV - K&N DCI - AFE Air Scoops - 98 Super Fuel - WAGNER FMIC - 3" down's, RB Inlets- BMS charge pipe With Tial BOV - BMS Meth Kit with FSB, 30/70 Water/Meth on CM12 nozzle
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