They found it...

RMNB · 06-14-2016, 06:04 AM

Rough idle, funny acceleration...so here it goes. Took the car into the dealership explained what was happening. Warranty is about to run out so what the hell, right?

Tech explores...looks at my aFe intake, oil catch can, Wag IC, VRSP CP....BOOM! Finds my JB4. (gulp) I KNOW...should have removed it, BUT... SA says they have to unplug it and run a test (318)?? I have it in map 0 but apparently many faults have shown up. I am hoping the SA is cool about it as I know the mgr in service has a few things on his own car...DP...o2 sim, etc. so maybe they diagnose and not report. My question is does this F up the other items in my warranty, not the 4yr/50k?? I do know they have to prove without a shadow of a doubt that the JB4 is the cause for the problems. There is no intake leak but they are still diagnosing. So should I be buying some "Depends"??

The SA did send me a link about DINAN ... said other "stuff" could void warranty blah blah BUT I wonder if I should get ready to bend over....

Anyone else out there know about these wonderful experiences?

Wolf 335 · 06-14-2016, 08:19 AM

They love when suckers come in with JB4 connected to the car.

That's an easy $300+ in their pocket without even doing anything.

I hope your SA is a cool guy.

Johnny Boost · 06-14-2016, 09:39 AM

I've personally never had a problem with warranty repairs.

RMNB · 06-14-2016, 10:20 AM

Quote:

Originally Posted by Wolf 335

They love when suckers come in with JB4 connected to the car.

That's an easy $300+ in their pocket without even doing anything.

I hope your SA is a cool guy.

I brought in my other 3 a couple of years ago and they didn't say anything but this is a new SA. I only have a month left on my warranty so i shouldn't be worried I suppose. Hopefully it's something that has nothing to do with the JB4. ...fingers are crossed!

TBN54 · 06-14-2016, 10:47 AM

Covered or not, boost out of there and make sure that SA knows exactly why you have that JB4.

RMNB · 06-14-2016, 11:25 AM

Quote:

Originally Posted by TBN54

Covered or not, boost out of there and make sure that SA knows exactly why you have that JB4.

Update... SA said they are removing JB4 to see what happens with coding and faults in the ECU,etc. I had no CEL at all but they are running further tests to see if JB4 is attributing to the issues.

Johnny Boost · 06-14-2016, 01:08 PM

Quote:

Originally Posted by 550i Beast

Update... SA said they are removing JB4 to see what happens with coding and faults in the ECU,etc. I had no CEL at all but they are running further tests to see if JB4 is attributing to the issues.

That's a sign that they really don't plan to void your warranty. They would've refused the work right off the bat.

RMNB · 06-14-2016, 02:03 PM

Quote:

Originally Posted by Johnny Boost

That's a sign that they really don't plan to void your warranty. They would've refused the work right off the bat.

I tend to agree as I asked if I was SCREWED....he said I don't think so but nonetheless they still have to figure it out. Hopefully it's a coil pack, plug, injector, vanos , etc. Hell even the serv mgr. has a Cobb tune! He said he had JB4 before...lights went off on his dash...so she switched Cobb. Sounds like they're "user friendly" so to speak. Anyway, I feel better at this point.

CantCatchMe · 06-14-2016, 03:52 PM

I usually keep mine on unless it's big time work I need to get done. I did the same with the Cobb.

You probably had some shadow codes or something weird pop up. Let us know what they find in the end.

RMNB · 06-14-2016, 07:42 PM

OK here it goes...removed JB4, car seemed to idle better. They definitely said it was because of JB4 on their report however they changed the brake fluid, oil change/filter, and cabin filter under warranty. Charged me $308 for the diagnostics to figure out what they problem was. Several faults/codes appeared in the DME. Other than that nothing wrong. Just a typical JB4 bug of sorts. All in all I can't complain. Free loaner for 5 days plus some fresh cookies. Only problem is that while they figured out their computer glitch which had been down for 3 hours I went up to the showroom to look at a M4. Mistake...sell the 3, put in an order... BMW did it again. No not really...next spring...probably.

M.a.r.k.u.s · 06-15-2016, 05:41 PM

Quote:

Originally Posted by 550i Beast

OK here it goes...removed JB4, car seemed to idle better. They definitely said it was because of JB4 on their report however they changed the brake fluid, oil change/filter, and cabin filter under warranty. Charged me $308 for the diagnostics to figure out what they problem was. Several faults/codes appeared in the DME. Other than that nothing wrong. Just a typical JB4 bug of sorts. All in all I can't complain. Free loaner for 5 days plus some fresh cookies. Only problem is that while they figured out their computer glitch which had been down for 3 hours I went up to the showroom to look at a M4. Mistake...sell the 3, put in an order... BMW did it again. No not really...next spring...probably.

Ha! That is literally what I did with the M3. Looked at it in the showroom without any intentions and before I know it I'm on a test drive...now the car is on a boat from Germany heading for the west coast...

RMNB · 06-15-2016, 06:11 PM

Quote:

Originally Posted by M.a.r.k.u.s

Ha! That is literally what I did with the M3. Looked at it in the showroom without any intentions and before I know it I'm on a test drive...now the car is on a boat from Germany heading for the west coast...

That's classic! Good for you. Hope you enjoy it... BTW, how was the stage 2 on your 335?? What numbers were you pulling?

M.a.r.k.u.s · 06-15-2016, 06:15 PM

Quote:

Originally Posted by 550i Beast

That's classic! Good for you. Hope you enjoy it... BTW, how was the stage 2 on your 335?? What numbers were you pulling?

It's pretty awesome. I still have the car but will put it for sale in the next couple of days. It actually pulls a little harder than the M3 even.

I never got it dyno tested though.

Rob_BMW_PNW · 06-17-2016, 03:35 PM

Quote:

Originally Posted by M.a.r.k.u.s

It's pretty awesome. I still have the car but will put it for sale in the next couple of days. It actually pulls a little harder than the M3 even.

I never got it dyno tested though.

Protuned with just Cobb ap only? No BEF or Jb4?

M.a.r.k.u.s · 06-17-2016, 03:47 PM

Quote:

Originally Posted by Rob_BMW_PNW

Protuned with just Cobb ap only? No BEF or Jb4?

Correct. I had a JB4 with BEF but didn't like the fact they it would randomly throw a CEL when having the BEF enabled with the JB4. Now with the protune it's very powerful and I have no issues at all.

06-14-2016, 06:04 AM	#1
RMNB Lieutenant Colonel 366 Rep 1,652 Posts Drives: 2021 M440xi BSM Join Date: Jul 2013 Location: Maryland iTrader: (0)	They found it... Rough idle, funny acceleration...so here it goes. Took the car into the dealership explained what was happening. Warranty is about to run out so what the hell, right? Tech explores...looks at my aFe intake, oil catch can, Wag IC, VRSP CP....BOOM! Finds my JB4. (gulp) I KNOW...should have removed it, BUT... SA says they have to unplug it and run a test (318)?? I have it in map 0 but apparently many faults have shown up. I am hoping the SA is cool about it as I know the mgr in service has a few things on his own car...DP...o2 sim, etc. so maybe they diagnose and not report. My question is does this F up the other items in my warranty, not the 4yr/50k?? I do know they have to prove without a shadow of a doubt that the JB4 is the cause for the problems. There is no intake leak but they are still diagnosing. So should I be buying some "Depends"?? The SA did send me a link about DINAN ... said other "stuff" could void warranty blah blah BUT I wonder if I should get ready to bend over.... Anyone else out there know about these wonderful experiences? Last edited by RMNB; 06-14-2016 at 06:12 AM.. Reason: added
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06-14-2016, 08:19 AM	#2
Wolf 335 Brigadier General 2565 Rep 3,663 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: Toronto iTrader: (0)	They love when suckers come in with JB4 connected to the car. That's an easy $300+ in their pocket without even doing anything. I hope your SA is a cool guy.
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06-14-2016, 09:39 AM	#3
Johnny Boost Colonel 326 Rep 2,016 Posts Drives: '21 M850i GC Join Date: May 2013 Location: TBD iTrader: (0)	I've personally never had a problem with warranty repairs. __________________ WedgePerformance E40 MHD \| Performance Exhaust Mod \| BMS DP \| Vibrant 1790 \| BMS Intake \| VRSF CP \| xHP Stage 3 Michelin PSS \| M3 Control Arms LUX v4 LEDs \| Shadowline Grills \| Lip Spoiler
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06-14-2016, 10:47 AM	#5
TBN54 Captain 425 Rep 793 Posts Drives: 08' E92 335 -> 17' F30 340i Join Date: Dec 2015 Location: Upstate NY iTrader: (0)	Covered or not, boost out of there and make sure that SA knows exactly why you have that JB4.
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06-14-2016, 03:52 PM	#9
CantCatchMe Lieutenant Colonel 339 Rep 1,744 Posts Drives: 2012 335i xdrive msport(E92) Join Date: Aug 2014 Location: West Bloomfield, MI iTrader: (2)	I usually keep mine on unless it's big time work I need to get done. I did the same with the Cobb. You probably had some shadow codes or something weird pop up. Let us know what they find in the end.
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06-14-2016, 07:42 PM	#10
RMNB Lieutenant Colonel 366 Rep 1,652 Posts Drives: 2021 M440xi BSM Join Date: Jul 2013 Location: Maryland iTrader: (0)	OK here it goes...removed JB4, car seemed to idle better. They definitely said it was because of JB4 on their report however they changed the brake fluid, oil change/filter, and cabin filter under warranty. Charged me $308 for the diagnostics to figure out what they problem was. Several faults/codes appeared in the DME. Other than that nothing wrong. Just a typical JB4 bug of sorts. All in all I can't complain. Free loaner for 5 days plus some fresh cookies. Only problem is that while they figured out their computer glitch which had been down for 3 hours I went up to the showroom to look at a M4. Mistake...sell the 3, put in an order... BMW did it again. No not really...next spring...probably.
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