Engine issues after BMW Performance Tune

Youngbp04 · 12-21-2011, 12:52 PM

So I had the BMW performance tune installed on my 2010 335i about a month and a half ago. Everything was great for the first month or so, but two weeks ago I started having intermittent issues. I am going to do my best to explain them and hopefully get some insight. I am bringing my car into the dealership tomorrow, which is a huge pain because I will not have a loaner and need to drive 2 hours for Christmas.

I started the car in the morning, it was decently cold, in the low 40s. The car started with out and hesitation and once the RPMs dropped down to normal levels, the engine was struggling, RPMs dropping and then increasing back to normal. It felt like it was struggling to get gas, and was on the brink of stalling. I have an automatic, and when I dropped the car into reverse, it did stall and shut off. I waited a second and restarted the car. I finished backing out of the space and got the car into drive (I would normally NEVER drive the car after something like this, but I had 10 minutes to get to the airport before I would miss checking into my flight). When I made it to the first stop light I had to throw my car in neutral and rev the engine to keep it from stalling.

I had about a 2 minute drive on the highway to get to the airport. When getting up to speed the check engine light came on and the whole car was shaking left to right from the engines movement. After about 60 seconds the car suddenly felt normal and the check engine light went off. This was only after less than 5 minutes of starting the car. When I got back into town a few days later and started the car it felt fine. Thought something may have been blocking the flow of gas and it passed or it was a bad tank of gas.

Whenever ever I have a cold start the engine runs a bit roughly it seems, but not to this extent. This morning, a similar thing happened. The check engine light came on and the car shuttered while moving, but after 30 seconds of driving at 30 mph the light went off and the car felt fine. The interesting part was even when the check engine light was on, I did a systems check and it came back OK.

I have had ZERO issues with this car for the first two years of driving it, and this issue only came up after the tune was done by the dealership.

Any ideas of what this might be? Has anyone heard of this happening after the performance tune is installed?? Any feedback would be awesome, I would like to go into the service center tomorrow as informed as possible.

bryce · 12-21-2011, 12:56 PM

i think it's a coincidence that you just had the performance tune installed. sounds like hpfp to me, but without the associated codes we can't be certain

bigdaddycane · 12-21-2011, 01:43 PM

+1 ^

tscdennab · 12-21-2011, 01:49 PM

Sounds like the fuel pump is dying.

BMWsky · 12-21-2011, 02:09 PM

Check for codes.

SouthfloridaE92 · 12-21-2011, 02:34 PM

Same thing happened to me few days Ago I have a jb4 though, and it same symptoms of dying out on cold starts and rpms would drop below 500.. And if I went to rip it through gears it would shudder hard and cel or service light would come on and if I would try to accelerate it would shudder and feel like my engine is about to explode... I had codes for misfires, and fuel related issues aswell

Youngbp04 · 12-21-2011, 03:05 PM

Quote:

Originally Posted by bryce

i think it's a coincidence that you just had the performance tune installed. sounds like hpfp to me, but without the associated codes we can't be certain

What codes would you expect? I did a systems check and it said everything was OK.

Youngbp04 · 12-21-2011, 03:05 PM

Also, will driving do any damage to the engine?

bulldog_yyc · 12-21-2011, 03:21 PM

Quote:

Originally Posted by Youngbp04

What codes would you expect? I did a systems check and it said everything was OK.

you need a BT tool or other hand held scanner that can read BMW codes. Sounds like the fuel pump is on its way out

RambleJ · 12-21-2011, 04:00 PM

It sounds like you have finally experienced a fuel pump failure...

Youngbp04 · 12-21-2011, 04:12 PM

Yeah it is interesting because I just had it in for service and they did the recall. I had no issues with the first one for 20k miles and now after under 1k miles the replacement is flaking.

I am on my way to the dealership now to get it serviced. My SA is awesome and I told him I was driving home for XMas and needed it done beforehand and didn't care what they needed to do to make it happen. He said not to worry and he'll make sure I get a loaner.

People complain about BMW service, but I can't say enough about my SA he is a stand up guy willing to go the extra mile and knows his stuff! Mike @ BMW of Fairfax is the man!

JamesM3M5 · 12-21-2011, 04:23 PM

Quote:

Originally Posted by Youngbp04

Yeah it is interesting because I just had it in for service and they did the recall. I had no issues with the first one for 20k miles and now after under 1k miles the replacement is flaking.

I am on my way to the dealership now to get it serviced. My SA is awesome and I told him I was driving home for XMas and needed it done beforehand and didn't care what they needed to do to make it happen. He said not to worry and he'll make sure I get a loaner.

People complain about BMW service, but I can't say enough about my SA he is a stand up guy willing to go the extra mile and knows his stuff! Mike @ BMW of Fairfax is the man!

Glad you're getting good service. We had to switch wholesale parts departments to BMW Fairfax because our other dealer in the area (I won't mention names, but it rhymes with BMW of Berling) didn't give a crap about us, even though we spent thousands a month on parts. Seems to be hit and miss at some dealerships, and others are great. It all depends on whether you get a good SA. Or maybe some deny warranty work or give you a hard time because they're close to their warranty work budget for the month?

Regardless, Merry Christmas!

RambleJ · 12-22-2011, 09:01 AM

Quote:

Originally Posted by Youngbp04

Yeah it is interesting because I just had it in for service and they did the recall. I had no issues with the first one for 20k miles and now after under 1k miles the replacement is flaking.

I am on my way to the dealership now to get it serviced. My SA is awesome and I told him I was driving home for XMas and needed it done beforehand and didn't care what they needed to do to make it happen. He said not to worry and he'll make sure I get a loaner.

People complain about BMW service, but I can't say enough about my SA he is a stand up guy willing to go the extra mile and knows his stuff! Mike @ BMW of Fairfax is the man!

FYI, the recall is not a new upgraded hpfp. Its a reprogramming that primes the fuel pump when the cars are unlocked. You may have already had a weak pump and the extra power pushed weak pump to failure.

Youngbp04 · 12-23-2011, 03:45 PM

Hopefully it is all fixed just got the call today it was done. They replaced the fuel injectors as well so fingers crossed.

Also had the performance exhaust put on while it is in the shop

gave me a stellar deal on labor! Almost half of what was initially quoted!

bulldog_yyc · 12-24-2011, 08:00 AM

Quote:

Originally Posted by Youngbp04

Hopefully it is all fixed just got the call today it was done. They replaced the fuel injectors as well so fingers crossed.

Also had the performance exhaust put on while it is in the shop

gave me a stellar deal on labor! Almost half of what was initially quoted!

nice, PE is sick!

Youngbp04 · 12-28-2011, 08:17 AM

Quote:

Originally Posted by turkish335

nice, PE is sick!

Thanks man on the way to the dealership to pick it up now! Anyone want the stock exhaust???

12-21-2011, 12:52 PM	#1
Youngbp04 Private First Class 15 Rep 161 Posts Drives: 2015 Mineral Grey M3 Join Date: Dec 2009 Location: Virginia iTrader: (0)	Engine issues after BMW Performance Tune So I had the BMW performance tune installed on my 2010 335i about a month and a half ago. Everything was great for the first month or so, but two weeks ago I started having intermittent issues. I am going to do my best to explain them and hopefully get some insight. I am bringing my car into the dealership tomorrow, which is a huge pain because I will not have a loaner and need to drive 2 hours for Christmas. I started the car in the morning, it was decently cold, in the low 40s. The car started with out and hesitation and once the RPMs dropped down to normal levels, the engine was struggling, RPMs dropping and then increasing back to normal. It felt like it was struggling to get gas, and was on the brink of stalling. I have an automatic, and when I dropped the car into reverse, it did stall and shut off. I waited a second and restarted the car. I finished backing out of the space and got the car into drive (I would normally NEVER drive the car after something like this, but I had 10 minutes to get to the airport before I would miss checking into my flight). When I made it to the first stop light I had to throw my car in neutral and rev the engine to keep it from stalling. I had about a 2 minute drive on the highway to get to the airport. When getting up to speed the check engine light came on and the whole car was shaking left to right from the engines movement. After about 60 seconds the car suddenly felt normal and the check engine light went off. This was only after less than 5 minutes of starting the car. When I got back into town a few days later and started the car it felt fine. Thought something may have been blocking the flow of gas and it passed or it was a bad tank of gas. Whenever ever I have a cold start the engine runs a bit roughly it seems, but not to this extent. This morning, a similar thing happened. The check engine light came on and the car shuttered while moving, but after 30 seconds of driving at 30 mph the light went off and the car felt fine. The interesting part was even when the check engine light was on, I did a systems check and it came back OK. I have had ZERO issues with this car for the first two years of driving it, and this issue only came up after the tune was done by the dealership. Any ideas of what this might be? Has anyone heard of this happening after the performance tune is installed?? Any feedback would be awesome, I would like to go into the service center tomorrow as informed as possible.
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12-21-2011, 12:56 PM	#2
bryce Banned 103 Rep 3,177 Posts Drives: zhp 3-pedal Join Date: May 2010 Location: texas iTrader: (22) Garage List 2005 bmw 330ci zhp [7.34] 2008 bmw 135i- sold [6.00] 2007 bmw 335i- sold [7.14]	i think it's a coincidence that you just had the performance tune installed. sounds like hpfp to me, but without the associated codes we can't be certain
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12-21-2011, 01:43 PM	#3
bigdaddycane I even mod my cereal 246 Rep 3,441 Posts Drives: 11 ZCP DCT M3 14 328d 21 GT4 Join Date: Aug 2009 Location: Northern Va iTrader: (53) Garage List 2021 Porsche GT4 [0.00] 2014 BMW 328d Xdriv ... [0.00] 2011 BMW M3 [0.00]	+1 ^ __________________ 2011 Mineral White M3 ZCP - Opticoat, Ventureshield, some CF, B&B exhaust, AFE Intake Vorsteiner VFF 101s Ohlins 2014 Mineral White 328d Xdrive Wagon - Opticoat, Ventureshield, B8s, H&R, Apex SM-10s Hawk Pads 2021 718 Cayman GT4 - Fire extinguiser
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12-21-2011, 01:49 PM	#4
tscdennab Banned 151 Rep 1,809 Posts Drives: BMW 335i Join Date: Oct 2010 Location: Europe iTrader: (0) Garage List 2008 BMW [6.24]	Sounds like the fuel pump is dying.
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12-21-2011, 02:09 PM	#5
BMWsky Major 24 Rep 1,244 Posts Drives: 335i Join Date: Dec 2010 Location: Webster NY iTrader: (1)	Check for codes.
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12-21-2011, 02:34 PM	#6
SouthfloridaE92 Second Lieutenant 14 Rep 252 Posts Drives: 2011 Black e92 335i 6MT Join Date: Aug 2011 Location: Fort lauderdale iTrader: (2)	Same thing happened to me few days Ago I have a jb4 though, and it same symptoms of dying out on cold starts and rpms would drop below 500.. And if I went to rip it through gears it would shudder hard and cel or service light would come on and if I would try to accelerate it would shudder and feel like my engine is about to explode... I had codes for misfires, and fuel related issues aswell
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12-21-2011, 03:05 PM	#8
Youngbp04 Private First Class 15 Rep 161 Posts Drives: 2015 Mineral Grey M3 Join Date: Dec 2009 Location: Virginia iTrader: (0)	Also, will driving do any damage to the engine?
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12-21-2011, 04:00 PM	#10
RambleJ Colonel 60 Rep 2,014 Posts Drives: F10 535i M-sport Join Date: Oct 2008 Location: Back in teh so cal iTrader: (2)	It sounds like you have finally experienced a fuel pump failure...
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12-21-2011, 04:12 PM	#11
Youngbp04 Private First Class 15 Rep 161 Posts Drives: 2015 Mineral Grey M3 Join Date: Dec 2009 Location: Virginia iTrader: (0)	Yeah it is interesting because I just had it in for service and they did the recall. I had no issues with the first one for 20k miles and now after under 1k miles the replacement is flaking. I am on my way to the dealership now to get it serviced. My SA is awesome and I told him I was driving home for XMas and needed it done beforehand and didn't care what they needed to do to make it happen. He said not to worry and he'll make sure I get a loaner. People complain about BMW service, but I can't say enough about my SA he is a stand up guy willing to go the extra mile and knows his stuff! Mike @ BMW of Fairfax is the man!
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12-23-2011, 03:45 PM	#14
Youngbp04 Private First Class 15 Rep 161 Posts Drives: 2015 Mineral Grey M3 Join Date: Dec 2009 Location: Virginia iTrader: (0)	Hopefully it is all fixed just got the call today it was done. They replaced the fuel injectors as well so fingers crossed. Also had the performance exhaust put on while it is in the shop gave me a stellar deal on labor! Almost half of what was initially quoted!
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