Help, JB+ with limp mod

tommykung · 08-24-2009, 04:43 AM

I have 07 E92 6AT with catless downpipe and BMS DCI. I just bought the JB+ from the other member in the forum. It's brand new, never install. So I install the JB+ and set it at 100% after I drove it for about 20 miles, it went to the limp mod. I took it out and set to 75%. It still go to limp mod. I'm not even drive fast and it went to limp mod at below 4000rpm. What's wrong with my car? Should I take it out and set at 50%? Or should I just disconnect the battery? Anyone

Thanks

enrita · 08-24-2009, 06:15 AM

maybe your car is not 100% and cannot handle the added boost. Try to get hold of a BT cable to see what codes you got.

Ridge335i · 08-24-2009, 06:59 AM

The limp mode is caused by the boost level not being reached. Go to burgertuning.com and look at the jb2 install guide, find the part where it shows you how to perform the "free" bypass. Once you perform the bypass you will no longer throw that code.

Also, something to note is that the install guide guide for the jb+ states that the bypass might need to be performed for any setting 75% and above.

Ridge335i · 08-24-2009, 07:00 AM

The limp mode is caused by the boost level not being reached. Go to burgertuning.com and look at the jb2 install guide, find the part where it shows you how to perform the "free" bypass. Once you perform the bypass you will no longer throw that code.

Also, something to note is that the install guide guide for the jb+ states that the bypass might need to be performed for any setting 75% and above.

hotrod182 · 08-24-2009, 08:14 AM

I would drive it hard without the JB+ again to see if you can get the limp mode to occur.

jeveryday · 08-24-2009, 08:28 AM

Quote:

Originally Posted by enrita

Try to get hold of a BT cable to see what codes you got.

Alan l. · 08-24-2009, 08:37 AM

Are you making sure that your ECU is "asleep" when you added the JB+ ?

RambleJ · 08-24-2009, 10:59 AM

Possibly one of the connecting pins in the JB+ is loose or not connected causing an interruption (like the TMAP is not plugged in), when this occurs a limp is thrown and the car runs a little trashy. Check the pins and verify if they are completely pushed in.
If your in so cal and would like a little assistance shoot me a PM. This had happened to me previously.

Mike@N54Tuning.com · 08-24-2009, 11:12 AM

Quote:

Originally Posted by RambleJ

Possibly one of the connecting pins in the JB+ is loose or not connected causing an interruption (like the TMAP is not plugged in), when this occurs a limp is thrown and the car runs a little trashy. Check the pins and verify if they are completely pushed in.
If your in so cal and would like a little assistance shoot me a PM. This had happened to me previously.

+1

Inspect the pins to be sure they are all okay.

Mike

tommykung · 08-24-2009, 05:54 PM

Quote:

Originally Posted by enrita

maybe your car is not 100% and cannot handle the added boost. Try to get hold of a BT cable to see what codes you got.

I don't have a BT cable. I use to have SSTT and its doesn't have limp mod.

Quote:

Originally Posted by Ridge335i

The limp mode is caused by the boost level not being reached. Go to burgertuning.com and look at the jb2 install guide, find the part where it shows you how to perform the "free" bypass. Once you perform the bypass you will no longer throw that code.
Hey, thank I will do so.
Also, something to note is that the install guide guide for the jb+ states that the bypass might need to be performed for any setting 75% and above.

Most of the time the car went to limp mod at low rpm. I wasn't boost at all, just drive normal. But I will try to do the bypass anyway. Thanks

Quote:

Originally Posted by hotrod182

I would drive it hard without the JB+ again to see if you can get the limp mode to occur.

You mean take out the JB+ and drive it hard???

Quote:

Originally Posted by Alan l.

Are you making sure that your ECU is "asleep" when you added the JB+ ?

I will take out the battery and do it again. Thanks

Quote:

Originally Posted by RambleJ

Possibly one of the connecting pins in the JB+ is loose or not connected causing an interruption (like the TMAP is not plugged in), when this occurs a limp is thrown and the car runs a little trashy. Check the pins and verify if they are completely pushed in.
If your in so cal and would like a little assistance shoot me a PM. This had happened to me previously.

The car run normal and strong power. But just thrown the limp mod when I'm driving slow.

persian54 · 08-24-2009, 06:08 PM

You in CA, where in Cali?

If you're local, Terry can prly help you out.

Mike@N54Tuning.com · 08-24-2009, 06:09 PM

The JB+ is off when you drive slow. So either a wire is broken, its not plugged in, or you have some other problem.

Mike

Kroy · 08-24-2009, 06:18 PM

Quote:

Originally Posted by Mike@N54Tuning.com

The JB+ is off when you drive slow. So either a wire is broken, its not plugged in, or you have some other problem.

Mike

My first guess was it not being connected properly too. Like those above have said, make sure the connector snaps in, maybe it's just not plugged in right.

Either way, you should take the JB+ out like hotrod said and drive your car hard. That way you'll know if it's the JB+ at fault.

tommykung · 08-24-2009, 06:31 PM

Quote:

Originally Posted by persian54

You in CA, where in Cali?

If you're local, Terry can prly help you out.

How do I get in touch with him? I'm local in LA area. Thanks

Quote:

Originally Posted by Mike@N54Tuning.com

The JB+ is off when you drive slow. So either a wire is broken, its not plugged in, or you have some other problem.

Mike

If the wire is broken, I shouldn't feel the power gain at all right? But feel a lot more power whenever I step on it. Or maybe it something else, nothing to do with JB+. I will try to set at 50% and see what happen. Should I do the bypass at 50%? Thanks

persian54 · 08-24-2009, 06:42 PM

Try to drive it without the JB+

if your problem still occurs, it's dealer time

if the problem goes away, it's the JB+'s fault

If you still have problem(s) running at 50% with the JB+, then PM me

RambleJ · 08-24-2009, 06:45 PM

http://burgertuning.com/contact.html
Contact the man himself.. You are local to his area.
I went up there to see him when mine did this, it was a simple 2 second fix.. If it is what I think it is, you might want to also get those TMAP disconnected codes cleared as well.

zucci · 08-24-2009, 06:57 PM

I feel bad because I sold the JB+ to you. I can swear that the unit was brand new and never installed.

I hope you can get a hold of Terry to help you out. Hopefully it is an issue that can be easily fixed.

Fraggy · 09-03-2009, 05:45 PM

So what ever happened with this?

08-24-2009, 04:43 AM	#1
tommykung Private 2 Rep 71 Posts Drives: e92 Join Date: Oct 2007 Location: ca iTrader: (0)	Help, JB+ with limp mod I have 07 E92 6AT with catless downpipe and BMS DCI. I just bought the JB+ from the other member in the forum. It's brand new, never install. So I install the JB+ and set it at 100% after I drove it for about 20 miles, it went to the limp mod. I took it out and set to 75%. It still go to limp mod. I'm not even drive fast and it went to limp mod at below 4000rpm. What's wrong with my car? Should I take it out and set at 50%? Or should I just disconnect the battery? Anyone Thanks
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08-24-2009, 06:15 AM	#2
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	maybe your car is not 100% and cannot handle the added boost. Try to get hold of a BT cable to see what codes you got. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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08-24-2009, 06:59 AM	#3
Ridge335i Banned 0 Rep 28 Posts Drives: BMW Join Date: Aug 2009 Location: Houston iTrader: (0)	The limp mode is caused by the boost level not being reached. Go to burgertuning.com and look at the jb2 install guide, find the part where it shows you how to perform the "free" bypass. Once you perform the bypass you will no longer throw that code. Also, something to note is that the install guide guide for the jb+ states that the bypass might need to be performed for any setting 75% and above.
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08-24-2009, 07:00 AM	#4
Ridge335i Banned 0 Rep 28 Posts Drives: BMW Join Date: Aug 2009 Location: Houston iTrader: (0)	The limp mode is caused by the boost level not being reached. Go to burgertuning.com and look at the jb2 install guide, find the part where it shows you how to perform the "free" bypass. Once you perform the bypass you will no longer throw that code. Also, something to note is that the install guide guide for the jb+ states that the bypass might need to be performed for any setting 75% and above.
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08-24-2009, 08:14 AM	#5
hotrod182 . 812 Rep 3,974 Posts Drives: 2023 i4 M50 Join Date: Dec 2006 Location: California iTrader: (0)	I would drive it hard without the JB+ again to see if you can get the limp mode to occur. __________________ 2011 Alpine 335d M-Sport 12.34 @ 110.48mph 2019 i3s Terra, 2008 Black 335i Sedan. 11.11@ 129.47 mph 2008 Monaco Blue JB3 2.0 335i Coupe. 11.33 @ 132.77 mph, 60-130mph: 6.95 seconds 2023 i4 M50 11.48 @ 121.56mph, 3.43 0-60 (dragy)
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08-24-2009, 08:37 AM	#7
Alan l. Major General 5453 Rep 8,815 Posts Drives: 2020 F95 X5M Competition Join Date: Jun 2009 Location: United States iTrader: (9)	Are you making sure that your ECU is "asleep" when you added the JB+ ?
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08-24-2009, 10:59 AM	#8
RambleJ Colonel 60 Rep 2,014 Posts Drives: F10 535i M-sport Join Date: Oct 2008 Location: Back in teh so cal iTrader: (2)	Possibly one of the connecting pins in the JB+ is loose or not connected causing an interruption (like the TMAP is not plugged in), when this occurs a limp is thrown and the car runs a little trashy. Check the pins and verify if they are completely pushed in. If your in so cal and would like a little assistance shoot me a PM. This had happened to me previously.
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08-24-2009, 06:08 PM	#11
persian54 Lieutenant General 923 Rep 15,818 Posts Drives: M760/G83M4 Join Date: Jun 2009 Location: The Valley, SoCal iTrader: (298)	You in CA, where in Cali? If you're local, Terry can prly help you out.
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08-24-2009, 06:09 PM	#12
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	The JB+ is off when you drive slow. So either a wire is broken, its not plugged in, or you have some other problem. Mike
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08-24-2009, 06:42 PM	#15
persian54 Lieutenant General 923 Rep 15,818 Posts Drives: M760/G83M4 Join Date: Jun 2009 Location: The Valley, SoCal iTrader: (298)	Try to drive it without the JB+ if your problem still occurs, it's dealer time if the problem goes away, it's the JB+'s fault If you still have problem(s) running at 50% with the JB+, then PM me
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08-24-2009, 06:45 PM	#16
RambleJ Colonel 60 Rep 2,014 Posts Drives: F10 535i M-sport Join Date: Oct 2008 Location: Back in teh so cal iTrader: (2)	http://burgertuning.com/contact.html Contact the man himself.. You are local to his area. I went up there to see him when mine did this, it was a simple 2 second fix.. If it is what I think it is, you might want to also get those TMAP disconnected codes cleared as well.
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08-24-2009, 06:57 PM	#17
zucci Private 4 Rep 60 Posts Drives: E92 335xi space gray/coral red Join Date: Feb 2009 Location: littleton, co iTrader: (1)	I feel bad because I sold the JB+ to you. I can swear that the unit was brand new and never installed. I hope you can get a hold of Terry to help you out. Hopefully it is an issue that can be easily fixed.
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09-03-2009, 05:45 PM	#18
Fraggy Brigadier General 193 Rep 3,469 Posts Drives: 2016 M3 Join Date: Jun 2005 Location: San Diego iTrader: (11)	So what ever happened with this? __________________ 2016 Alpine White M3 (gone) 2019 Alfa Romeo Guilia (Totaled) 2020 Car-less 😁 (no more) 2020 M340
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