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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > JB4 stage 2 N55 Map 5



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      07-26-2012, 11:47 AM   #67
eyim1988
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I only have an intake and jb4 stage 2. Can I run map 5? or my only choice is map 1 unless I decide to get a dp, cp, fmic, so i can run map 2. and meth for map 3. Is meth safe for long run?
you can run it but i recommend getting a catless downpipe asap.
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      07-26-2012, 12:18 PM   #68
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Why do you suggest that? im scared about BMW servicing when I get an oil change or for maintenance. Will a DP be an issue? Also If I do a DP a CP is a must right?

Is meth safe for long term for the engine?
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      07-27-2012, 07:53 AM   #69
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I need to run a log, but how is everyone else's boost psi on map 5? I can tell reduced performance since my map 5 and wire upgrade. First week was awesome, now I'm only showing 12-14 psi max where before it was 16-17. So, until I can get logs to Terry, I've been running map 7 on e85/93
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      07-27-2012, 01:09 PM   #70
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Originally Posted by mdyates View Post
I need to run a log, but how is everyone else's boost psi on map 5? I can tell reduced performance since my map 5 and wire upgrade. First week was awesome, now I'm only showing 12-14 psi max where before it was 16-17. So, until I can get logs to Terry, I've been running map 7 on e85/93
i wanted to run map 7 but is it safe? what mods do u have? and i had the same issue. it was running strong the first week , then went down to 12-14 psi and now its back to normal 16-17. weird
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      07-27-2012, 01:20 PM   #71
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I am still around 15 eventhough just 93 no mixed. Randomly i got half engine lights and it go off
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      07-27-2012, 01:52 PM   #72
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i wanted to run map 7 but is it safe? what mods do u have? and i had the same issue. it was running strong the first week , then went down to 12-14 psi and now its back to normal 16-17. weird
I have bms dp and bms intake. I have sent Terry map 7 logs beta and they look good. I'd say true race gas feels stronger, yet negligible.

So, seems safe to me! I run 50/50 e85 and 93, however. 99 Octane?
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      07-27-2012, 03:26 PM   #73
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Don't switch between maps if you're in map 5. Just keep it there because switching in between them can cause map 5 to reset to 14 psi, I think that could be the problem, I don't know the exact order on how to reset map 5 so I just don't switch to any map including map 0.
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      07-28-2012, 04:51 PM   #74
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is it worth the trouble of updating the jb4 if your never gonna run e85 and dont have a dp/cp?
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      07-29-2012, 04:36 PM   #75
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not worth the trouble in my opinion. The newest updates are pretty much for the map 5 auto-learning when you put E85 or other gas.
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      07-29-2012, 11:44 PM   #76
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Quote:
Originally Posted by F335i
Don't switch between maps if you're in map 5. Just keep it there because switching in between them can cause map 5 to reset to 14 psi, I think that could be the problem, I don't know the exact order on how to reset map 5 so I just don't switch to any map including map 0.
But the auto learn adjusts boost depending on the cars performance.
How can switching maps
Limit boost levels?
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      07-30-2012, 04:46 PM   #77
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http://www.e90post.com/forums/showthread.php?t=498957

I know this is an old thread but just e-mail terry and see if the new update still causes map 5 to reset when you map switch. Post back and let us know.
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