Cobb malfunction

lcg · 08-26-2013, 09:43 PM

Hey guys, I've been running the latest version of cobbs tune for the past month, and recently my car has been really messed.

At around 3500 RPM my car starts sputting and loses a ton of power. The engine light comes on and it starts vibrating like mental. (Also feels like a boost leak) Only until I shut it off and turn it back on is when the engine light deactives.

This evening I wanted to show a friend for some advice, and the same thing happened, but the engine light stayed on even if I shut the car on and off.

So I plugged in my Cobb AP and went to trouble shooting- 3 codes came up.

Code 1 "P0306" cylinder 6 misfire detected

Code 2 "P29D2" misfire, cylinder 6

Code 3 "P2AAF" fuel pump, plausibility

So I cleared the codes and decided to uninstall the tune. Once uninstalled I took the car for a long ride. The car felt completely normal. I was booting it in all gears and no glitches were happening at all. However, It's extremely hard to compare it to the way it use to be... So it obviously felt slower because I'm used to the tune, but I'm still worried about the misfire or turbo with potential boost leaks.

I'm a bit afraid to install the tune now.
Do any of you fine gents have advice or similar stories?

2008 e93 335i manual

Cheers y'all

Yvette · 08-26-2013, 09:48 PM

time to change plugs?

lcg · 08-26-2013, 09:51 PM

70k. Only on the tune it spurts

Yvette · 08-26-2013, 10:57 PM

Quote:

Originally Posted by gazzetta

70k. Only on the tune it spurts

when's the last time you changed the plug?

lcg · 08-26-2013, 10:59 PM

Quote:

Originally Posted by e90sexion

Quote:

Originally Posted by gazzetta

70k. Only on the tune it spurts

when's the last time you changed the plug?

Never. After some research I'm starting to think its the hpfp

lcg · 08-26-2013, 10:59 PM

I plan on bringing it to RMP, but Rocco is really busy

Shoooter_j · 08-26-2013, 11:08 PM

Funny just watched this vid randomly today:

pHo_e92 · 08-28-2013, 05:20 PM

what map revision are you on? I highly recommend changing your plugs. Dealer wont replace your hpfp without no codes.

Phantom 335i · 08-29-2013, 08:37 AM

I would start by changing the plugs forsure, maybe some new coils,

lcg · 08-29-2013, 03:41 PM

Ill change the plugs and swap coils, and update yall.

08-26-2013, 09:43 PM	#1
lcg Second Lieutenant 6 Rep 215 Posts Drives: 2008 bmw 335i Join Date: May 2013 Location: toronto iTrader: (0)	Cobb malfunction? Hey guys, I've been running the latest version of cobbs tune for the past month, and recently my car has been really messed. At around 3500 RPM my car starts sputting and loses a ton of power. The engine light comes on and it starts vibrating like mental. (Also feels like a boost leak) Only until I shut it off and turn it back on is when the engine light deactives. This evening I wanted to show a friend for some advice, and the same thing happened, but the engine light stayed on even if I shut the car on and off. So I plugged in my Cobb AP and went to trouble shooting- 3 codes came up. Code 1 "P0306" cylinder 6 misfire detected Code 2 "P29D2" misfire, cylinder 6 Code 3 "P2AAF" fuel pump, plausibility So I cleared the codes and decided to uninstall the tune. Once uninstalled I took the car for a long ride. The car felt completely normal. I was booting it in all gears and no glitches were happening at all. However, It's extremely hard to compare it to the way it use to be... So it obviously felt slower because I'm used to the tune, but I'm still worried about the misfire or turbo with potential boost leaks. I'm a bit afraid to install the tune now. Do any of you fine gents have advice or similar stories? 2008 e93 335i manual Cheers y'all
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08-26-2013, 09:48 PM	#2
Yvette Major General 772 Rep 7,409 Posts Drives: M Join Date: Sep 2006 Location: Vancouver iTrader: (19)	time to change plugs?
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08-26-2013, 09:51 PM	#3
lcg Second Lieutenant 6 Rep 215 Posts Drives: 2008 bmw 335i Join Date: May 2013 Location: toronto iTrader: (0)	70k. Only on the tune it spurts
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08-26-2013, 10:59 PM	#6
lcg Second Lieutenant 6 Rep 215 Posts Drives: 2008 bmw 335i Join Date: May 2013 Location: toronto iTrader: (0)	I plan on bringing it to RMP, but Rocco is really busy
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08-26-2013, 11:08 PM	#7
Shoooter_j Second Lieutenant 131 Rep 255 Posts Drives: 07 e92 335 Join Date: May 2013 Location: Toronto iTrader: (0)	Funny just watched this vid randomly today:
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08-28-2013, 05:20 PM	#8
pHo_e92 Captain 32 Rep 878 Posts Drives: SGM e92 Join Date: Jan 2011 Location: 905 iTrader: (4) Garage List 2008 BMW 335i [7.26] 2000 BMW 323i [6.00] 1997 Honda Civic HB [10.00] 2007 BMW X5 4.8 [10.00]	what map revision are you on? I highly recommend changing your plugs. Dealer wont replace your hpfp without no codes. __________________ 08 335i \| Space Gray \| Burl Walnut Wood Trim \| Sport pkg \| Premium Pkg \| LOGIC7 \| Navi \| Comfort Access \| COBB \| Injen DCI \| Active Autowerke \| Sonic Tuning \| E92 Lighting \| ER \| HKS \| BMS \| Ground Control \| Vortex Tuning \|
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08-29-2013, 08:37 AM	#9
Phantom 335i Second Lieutenant 12 Rep 270 Posts Drives: 335i Join Date: Nov 2011 Location: Edmonton iTrader: (2) Garage List 2007 BMW 335i [0.00]	I would start by changing the plugs forsure, maybe some new coils,
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08-29-2013, 03:41 PM	#10
lcg Second Lieutenant 6 Rep 215 Posts Drives: 2008 bmw 335i Join Date: May 2013 Location: toronto iTrader: (0)	Ill change the plugs and swap coils, and update yall.
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