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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Jb4 map 5 shutting my car down!



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      10-05-2012, 08:42 PM   #23
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Quote:
Originally Posted by aph335i View Post
This happened again and the code im getting is 29F2. any ideas? happens in any map but was in 4th gear everytime


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3) Revised open loop mapping and introduced open loop auto learning system. This will automatically range open loop fueling as a function of fuel trims and other internal parameters. *** NOTE *** In some cars the auto learning may not properly range open loop fueling, triggering false 29F2 fuel pressure codes, and you will need to set it manually. To do this first disable open loop learning by setting FutureUseA = 2. Then start with an open loop setting of 75. If you experience 29F2 codes lower the setting by 5 until they subside. If your fuel trims are stuck over 50, you experience run lean failsafe (2 SES flashes), or encounter frequent 2D25 tuner codes, increase the setting by 5 until they subside. If your high fuel pressure is consistently below 13 when open loop is 75% or higher you likely have a physical fuel pump problem. If you are unable to find a suitable setting to avoid both 29F2 and 2D25 codes you will need to reduce the alcohol content of your fuel (e.g. if mixing in E85 mix in less), lower the all map AFR settings to lean the air/fuel targets, or use a fixed boost map like 1 or 2.
4) Various minor changes related to the above items.
http://www.n54tech.com/forums/showthread.php?t=10605
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      10-07-2012, 08:45 AM   #24
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Quote:
Originally Posted by michalez
It is possible to make map with 0 data to not start engine and secure car from thiefs using jb4?
That would be awesome.

Lots of cars getting stolen in the UK. creating new keys via obd port.
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      10-07-2012, 01:23 PM   #25
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Quote:
Originally Posted by michalez
It is possible to make map with 0 data to not start engine and secure car from thiefs using jb4?
My e39 used to have an engine kill access code option in the nav. Like transporter. So cool. Dont know why they did away with it. Too many fools forgetting codes maybe.

Just go to map 8 to disable turbos and then turn transport mode On too.
I did this at shop recently.
Makes the car so slow a thief could push it faster.
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      10-07-2012, 01:25 PM   #26
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And OP newest fw maps are supposed to solve the problems your having. Try updating.
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