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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 > JB+ problem, keep going back to stock.



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      03-07-2015, 04:45 PM   #1
wanna325i
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JB+ problem, keep going back to stock.

Ok, I don't know is it even right or made any sense to you guys.

Here is the story, my jb is used and got it weeks ago. It was fine for 3-4 days. Felt the increase then suddenly throw a 2abd,2abc and 3100 code. I search the forum and the answer is my tmap sensor might be the problem. So I unstall jb and tmap then reinstall everything.

Now my problem is my car is not making extra boost if I didn't go unplug and re-plug the jb before I start to car. If I start it without doing so, my car just felt stock. This is all according to my butt dyno.

Mod on car is only DCI and jb+. Plugs are less then 9000 miles , intakes are clean 10000 miles ago.

Thanks

Last edited by wanna325i; 03-08-2015 at 12:51 AM..
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      03-09-2015, 02:09 PM   #2
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contact Terry.
It is very hard to diagnose problems with Jb+ since you cannot do any datalog.
It might be time for you to get a JB4.
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