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mrbeefy mrbeefy is offline
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Exclamation fresh install issues please help - 03-07-2018, 02:32 PM

just put in a new jb4 and I'm getting a 2d20 code, this is the second unit to cause this and this time I was able to hook up the blutooth interface and I can watch the throttle signal bounce from 0 up to 18 irratically, its a new pedal that I just got thinking that ity was bad, I'm at a loss here. log is attached engine was not running
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Last edited by mrbeefy; 03-07-2018 at 02:52 PM..
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Limpmode's Avatar
Limpmode Limpmode is offline
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Default 03-08-2018, 01:27 PM

Second JB4 or second pedal? I would review your install/wiring (JB4).


2007 335i; JB4 G5, MHD BEF, BMS DCI, Phoenix CP, Tial BOV, MAP OC, BMS OCC, 1320 Down *****, MMP Inlets, RB Ext PCV, Mishimoto OCC, BMS Meth, N20 TMAP, VTT stock CHRA=billet comp wheels, Blk powdercoat style 124 Wheels (5series staggered), 275/35/18 Firestone rears.
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mrbeefy mrbeefy is offline
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Default 03-08-2018, 01:33 PM

3rd pedal second jb4, they said my car isn't compatible and are refunding me, hope I have better luck with cobb
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Nitrousbird Nitrousbird is offline
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Default 03-08-2018, 05:12 PM

People still buy Cobb?
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mrbeefy mrbeefy is offline
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Default 03-08-2018, 05:18 PM

After killing the origional gas pedal and a 150$ replacement, yes I'm trying cobb lol. Jb4 by far is the preferred method for me but the damn thing.....rant avoided. Hopefully the Cobb plays nice with my car
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Limpmode Limpmode is offline
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Default 03-09-2018, 11:42 AM

Skip Cobb, go with MHD.


2007 335i; JB4 G5, MHD BEF, BMS DCI, Phoenix CP, Tial BOV, MAP OC, BMS OCC, 1320 Down *****, MMP Inlets, RB Ext PCV, Mishimoto OCC, BMS Meth, N20 TMAP, VTT stock CHRA=billet comp wheels, Blk powdercoat style 124 Wheels (5series staggered), 275/35/18 Firestone rears.
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LessIsMore LessIsMore is offline
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Default 03-09-2018, 01:12 PM

Hold on, are you're saying that BMS told you that the JB4 is not compatible with an 09 335i auto??


2017 AMG C63 -JB4
2009 535i - 548whp - sold
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mrbeefy mrbeefy is offline
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Default 03-09-2018, 01:16 PM

Quote:
Originally Posted by LessIsMore
Hold on, are you're saying that BMS told you that the JB4 is not compatible with an 09 335i auto??
Yes that's exactly what I'm saying, the car ran fine had perfect signal on it's live stream then I added the jb4 and Everytime I hooked it up it would give me the 2d20 fault and go into reduced power mode then after that the pedal would go out, after trying a second unit kindly sent to me from burger, and gotten the same issues and sending pics to their support guys they came to the conclusion that it's not compatible. Not sure why or how but that's where I'm at
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LessIsMore LessIsMore is offline
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Default 03-13-2018, 02:23 PM

where are you located?


2017 AMG C63 -JB4
2009 535i - 548whp - sold
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mrbeefy mrbeefy is offline
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Smile Solved - 03-13-2018, 02:44 PM

Well it turns out that the jb4 probably would have worked well, even tho they told me it wasn't compatible, what I found that was the issue was a bad ground after extensive disassembly and testing all the wires for continuity, was that the pedal was not the culprit, instead it was a ground under the hood on the pass side strut tower that had a poor connection, it was good enough to run the ECU but with the extra current demand of the jb4 it started to cause a noisy signal in the pedal. It's fixed now and the Cobb is installed, rather have the jb4 but can't argue with the results so I'm happy, plus Cobb gave me a good discount for being a vet. I appreciate y'alls input and I urge you to check your grounds first before buying a 150$ pedal or two. Oh and for the fellow who asked I'm in NC Fayetteville to be precise.
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LessIsMore LessIsMore is offline
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Default 03-13-2018, 03:51 PM

Quote:
Originally Posted by mrbeefy
Well it turns out that the jb4 probably would have worked well .... the Cobb is installed, rather have the jb4 but can't argue with the results
Sounds like you could go JB4 now that you found the real issue, and I'd still recommend that all day over the Cobb. But hey, discount.

Surprised BMS was stumped by a bad chassis ground ...

Quote:
Originally Posted by mrbeefy
Oh and for the fellow who asked I'm in NC Fayetteville to be precise.
I was just curious whether the issue could be that you were in a foreign country that used different DME coding, or something else that made a JB4 not compatible - a long-shot, and now clear that's not the case, but was curious.


2017 AMG C63 -JB4
2009 535i - 548whp - sold
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Nitrousbird Nitrousbird is offline
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Default 03-19-2018, 07:52 PM

Quote:
Originally Posted by mrbeefy
Well it turns out that the jb4 probably would have worked well, even tho they told me it wasn't compatible, what I found that was the issue was a bad ground after extensive disassembly and testing all the wires for continuity, was that the pedal was not the culprit, instead it was a ground under the hood on the pass side strut tower that had a poor connection, it was good enough to run the ECU but with the extra current demand of the jb4 it started to cause a noisy signal in the pedal. It's fixed now and the Cobb is installed, rather have the jb4 but can't argue with the results so I'm happy, plus Cobb gave me a good discount for being a vet. I appreciate y'alls input and I urge you to check your grounds first before buying a 150$ pedal or two. Oh and for the fellow who asked I'm in NC Fayetteville to be precise.
Cobb gave you a big discount because no one is buying their dated tuner. Probably still spent way more than going MHD. JB4 is more than just a tune and many JB4 users do a MHD backend flash in conjunction with the JB4.
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 03-19-2018, 08:22 PM

Quote:
Originally Posted by mrbeefy
Yes that's exactly what I'm saying, the car ran fine had perfect signal on it's live stream then I added the jb4 and Everytime I hooked it up it would give me the 2d20 fault and go into reduced power mode then after that the pedal would go out, after trying a second unit kindly sent to me from burger, and gotten the same issues and sending pics to their support guys they came to the conclusion that it's not compatible. Not sure why or how but that's where I'm at
No there is a misunderstanding, the JB4 is fully compatible. Based on the code I suspect we sent you the wrong harness, twice. If you still need help email us and we'll sort it out for you.


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It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Default 03-19-2018, 09:17 PM

Personally- now that the issue is sorted, I’d give the JB4 another shot.

Chalk it up to n54 growing pains

Cobb is pretty outdated, and Support is a bit limited at best in regards to updates & tuners who are actually still using it/supporting.



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