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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Jb4 stage 2 !!!
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      11-28-2013, 01:41 PM   #1
omer
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Jb4 stage 2 !!!

Is there any new firm for the jb4 stage 2 for 535 I still get this damn battery problem.
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      12-06-2013, 01:04 PM   #2
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Quote:
Originally Posted by omer View Post
Is there any new firm for the jb4 stage 2 for 535 I still get this damn battery problem.
I can't believe this issue is not resolved. I thought I remember reading that Terry said the last update fixed the issue. Did you talk to terry about this?
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      12-06-2013, 02:08 PM   #3
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Its been awhile since terry had any updates even for the N63
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      12-06-2013, 03:49 PM   #4
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I wish Cobb would start on the F bodies
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      12-06-2013, 03:51 PM   #5
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Is the battery drawn an issue for all F10's? Knock on wood but I haven't had that issue.
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      12-06-2013, 04:02 PM   #6
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Last time terry said he came out with the new firm and fixed the problem but I still get it. Also he has to do something about the throttle respond better job. It should be more responsive and a bit more sensitive.
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      12-07-2013, 01:28 PM   #7
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Quote:
Originally Posted by omer View Post
Last time terry said he came out with the new firm and fixed the problem but I still get it. Also he has to do something about the throttle respond better job. It should be more responsive and a bit more sensitive.
Thanks for the response Omer. Have you been able to talk to Terry about your car still having this issue even after the last update? What was his answer?
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      12-07-2013, 01:29 PM   #8
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No answer from him yet, he just says that they are working on it but who knows.
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      12-08-2013, 01:38 AM   #9
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No answer from him yet, he just says that they are working on it but who knows.
That sucks! Thanks.

RambleJ, you have something to say now?
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      12-08-2013, 03:26 PM   #10
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Quote:
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That sucks! Thanks.

RambleJ, you have something to say now?
Yes, this only happens with stage 2. So run stage 1.
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      12-08-2013, 06:27 PM   #11
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I bought my stage 2 used so I don't know what version its on, haven't checked yet. I occasionally experience this when the car sits from Friday night til Monday morning, but it goes away since I drive for an hour to work, I figured the battery has charged by then.

No difference starting the car at all, same crank every time.
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      12-08-2013, 06:34 PM   #12
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That's correct but terry should fix that problem you know.
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      12-08-2013, 11:58 PM   #13
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Quote:
Originally Posted by RambleJ View Post
Yes, this only happens with stage 2. So run stage 1.
Right on time. Are there dynos proving the gains with the Stage 1? The BMS dyno graph doesn't count. In the past I have seen some questionable tunes with the stage 1.
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      12-09-2013, 02:57 AM   #14
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I currently have the JB4 Stage 2 on my F13 640i, until now no power drain. Ill let you guys know if anything happens in the coming days.

Wait next to your car after locking it for 10 - 15 minutes, your water pump might be running and consuming your battery, some people were complaining about this issue and Terry dont know if this issue will be fixed soon
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      12-09-2013, 11:19 AM   #15
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Quote:
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Right on time. Are there dynos proving the gains with the Stage 1? The BMS dyno graph doesn't count. In the past I have seen some questionable tunes with the stage 1.
Dyno's, im sure there are some out there. I wish you could have tested the one I sold to Miami. You can tell there is definitely a power increase.
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      04-26-2014, 05:26 PM   #16
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Quote:
Originally Posted by omer View Post
Last time terry said he came out with the new firm and fixed the problem but I still get it. Also he has to do something about the throttle respond better job. It should be more responsive and a bit more sensitive.
Any luck with getting the kinks worked out from your jb4?
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