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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 > JB2 issue still unresolved...



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      11-24-2008, 04:40 PM   #1
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Question JB2 issue still unresolved...

Had the jb2 taken out and is at bmw as i type this. They called me and said theres a problem with the cars computer..btw my car is a 08' 335i sedan. Anyway the sales rep said they need to drive the car and 'investigate' for further diagnosis..kinda scary. I am almost certain it is a wiring problem, if so, will this void my warranty? or do they have to find some sort of hard evidence that there has been a chip such as the chip itself?
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      11-24-2008, 04:42 PM   #2
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you prolly mixed a wire...ive had to help a few people diagnose this over the phone
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      11-24-2008, 05:02 PM   #3
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oh yah..if indeed its a mixed wire...99% youre screwed
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      11-24-2008, 05:59 PM   #4
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ya if its a wiring problem not cool...should have checked and double checked before you took it in...but im sure i don't have to tell you that
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      11-24-2008, 06:07 PM   #5
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lol you better hope you didn't mix a wire before you took it in. Get the lube ready if so.
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      11-24-2008, 06:27 PM   #6
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lube?
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      11-24-2008, 06:31 PM   #7
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Originally Posted by yeefoo335 View Post
lube?
Yeah, BMW is about to stick it to you without lube. Good luck man.
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      11-24-2008, 06:32 PM   #8
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Quote:
Originally Posted by yeefoo335 View Post
lube?
bc you're going to get fucked. i mixed up a wire too while uninstalling jb2 and installing jb3. luckily i caught it with the help of Terry and corrected the problem, though i did throw a engine malfunction light which i need to clear.
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      11-24-2008, 06:37 PM   #9
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Quote:
Originally Posted by yeefoo335 View Post
Had the jb2 taken out and is at bmw as i type this. They called me and said theres a problem with the cars computer..btw my car is a 08' 335i sedan. Anyway the sales rep said they need to drive the car and 'investigate' for further diagnosis..kinda scary. I am almost certain it is a wiring problem, if so, will this void my warranty? or do they have to find some sort of hard evidence that there has been a chip such as the chip itself?
Man I hope its not a wire...I told u to relax and retrace your steps and not to bring the car in before you really had no choice...If it is a wire, I think u need to speak to the SA and get him to get a tech together and hit them off with some MONEY$$$$$$....
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      11-25-2008, 09:14 AM   #10
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you're boned bro...
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      11-25-2008, 09:24 AM   #11
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I bet I know exactly what it is.
You forgot to put the vacuum tubes back to stock.
When using a JB2, you need to bypass the rear solenoid.
This has happened before.

If what I say is true then you're kind of screwed.
the only reason to bypass the solenoids is because of putting in a tune.
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      11-25-2008, 10:00 AM   #12
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True, the solenoid bypass tends to get overlooked when uninstalling JB2; luckily I caught it when I was installing JB3.
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      11-25-2008, 10:12 AM   #13
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Running a JB2 on an 08? Wouldnt that mean he could also have DME V81 and tripping the code for a tune?
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      11-25-2008, 10:13 AM   #14
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Better start thinking of a VERY good reason/excuse as to why those wires would be crossed.
Maybe something along the lines of you lent your car to a mechanic friend for a week, and am not sure what he might of tried to do, but you never messed with the car at all.
The dealership and SA "MAY" believe that and fix the crossed wire and let it fly. But you better be damn good at lying and have a very understanding/gullible SA.

PnP upgrade a couple hundred bucks. Voided BMW powertrain warranty potentially thousands of dollars. Triple checking wiring job and test driving well before you take car into dealer, priceless!

now you just need to change your screen name from yeefoo335 to youfool335
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      11-25-2008, 10:35 AM   #15
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need to be upfront with SA and the tech working on it...give them each 100 in the hand and call it a day!!
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      11-25-2008, 10:52 AM   #16
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Quote:
Originally Posted by cn555ic View Post
need to be upfront with SA and the tech working on it...give them each 100 in the hand and call it a day!!

Better make it a couple bills each.

And the time would of been when they told you that they needed to "investigate further".
Your response should of been something like, "well in your investigation, if you find something that is not right because of human error, if your investigation stops at that point and the "issue" fixed without incident, your final investigation will lead you to a couple green Benjamin's in your pocket."
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      11-25-2008, 10:55 AM   #17
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I like it when customers bring us food. We will usually do almost anything for them at that point.
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      11-25-2008, 11:05 AM   #18
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lol youll be okay use the lent it to a friend and he was fuckin with my computer excuse

theyll probably bitch at you for going in there but as long as theres no warranty code youre fine

why!!! would you take it to bmw...
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      11-25-2008, 11:06 AM   #19
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Originally Posted by Park2670 View Post
I like it when customers bring us food. We will usually do almost anything for them at that point.
i can see him walking into the dealer with a tray full of food and dropping it on the SA's desk saying "we don't have a warranty problem now do we?" while winking... everyone would be like WTF!?
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      11-25-2008, 12:15 PM   #20
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Originally Posted by nj323ci View Post
i can see him walking into the dealer with a tray full of food and dropping it on the SA's desk saying "we don't have a warranty problem now do we?" while winking... everyone would be like WTF!?
Hey, if you pick the right food... It may work
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      11-25-2008, 01:46 PM   #21
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lol funny replies, but i think i forgot to mention i didnt even perform the solenoid bypass when i installed the jb2...heard too many people having problems dont know if it was necessarily linked to the jb2 though...
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      11-25-2008, 02:20 PM   #22
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Quote:
Originally Posted by yeefoo335 View Post
lol funny replies, but i think i forgot to mention i didnt even perform the solenoid bypass when i installed the jb2...heard too many people having problems dont know if it was necessarily linked to the jb2 though...
wait wait...you didn't perform the bypass? how the hell did you get around that?
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