[335m]

On my way back to work from lunch and my engine throws a popping sound and goes into limp. Luckily I was two blocks away from the dealer.

I am still under warranty but I just had my cobb tune installed, BMS performance intake, and coilovers with new wheels put on yesterday...

Can anyone decipher these codes that my AP3 showed me before I had to drop it off? Anyone think they would void my warranty due to the mods? Would they check for the cobb tune?

[335m]

Also when I attempted to start the car it stuttered and shut off.

[jwzimm]

No codes shown in your post.

And, yes, they will be able to see your tune very easily if you did not remove it. The coilovers are a non-issue and the intake should be as well so long as they are not anal. The tune, on the other hand... If the engine gave out they will almost certainly blame that for the failure (you are increasing boost and stress on the engine afterall).

[JETmn]

Yeah, you definitely should have uninstalled the AP. That might be an expensive lesson. Hope it is the Vanos as that is on recall and you will probably be covered even with the mods.

[335m]

Originally Posted by jwzimm

No codes shown in your post.

And, yes, they will be able to see your tune very easily if you did not remove it. The coilovers are a non-issue and the intake should be as well so long as they are not anal. The tune, on the other hand... If the engine gave out they will almost certainly blame that for the failure (you are increasing boost and stress on the engine afterall).

I updated the first post with the picture.

[jwzimm]

Well some googling shows this: http://www.bimmerfest.com/forums/sho...d.php?t=642368

P3447 is related to cylinder 6 exhaust valve

P2E4C is the exhaust flapper valve (you have golf tee mod, yes?)

P2774 appears to be related to the AWD system

P2C57 is a boost leak code: http://www.e90post.com/forums/showthread.php?t=825179

P2906 doesn't come up with anything though.

[335m]

Yeah I found the same things.

Exhaust valve- is this the same as the flapper?
Flapper - yeah I unplugged the trunk
AWD - I am not x-drive so I am a little confused but my tpms sensors are not installed so that may be it
Boost leak - this is what worries me

[tke344]

Charge pipe probably cracked

[data_cruncher]

Sounds like your chargepipe cracked. The same thing happened to me heading back home from Miami. My car was bone stock at the time and cruising @ 85mph I heard a loud pop. First thing I thought about was the vanos bolt but after opening the hood I saw that the CP cracked. Made it back to Atlanta, put the car in the shop, and ordered an ER CP. The dealer fought me for the repairs saying that I had the car modified but eventually they caved it and completed the repair under warranty.

[335m]

Really hoping that is it. So what did the dealer cover under warranty? They didn't install the er chargepipe for you right?

[jwzimm]

Just checked a list I have. P2906 is another boost leak code. See attached.

Looks like you blew the chargepipe for sure.

[data_cruncher]

No the dealer just installed another stock chargepipe. After I got the car back I installed the ER CP myself.

[snaimpally]

Josh, hope it all works out. Are you still under the BMW warranty? I thought you said you were under a 3rd party warranty. I would remove the Cobb tune before handing off to the dealer.

[e92proper]

Id be very concerned the car won't start now. Uninstall the COBB ASAP and get it into the dealer. The cylinder 6 valve code is one I would worry about also.

[jwzimm]

^^ Yeah, I was wrong about that. In looking at the fault code list I posted here is what each one means:

P3447 Engine oil Level: Too Low

P2E4C Exhaust gas flap, activation: Line disconnection

P2774 Mass air flow sensor, plausibility: Air mass compared with model too high

P2C57 Charge-air pressure control, lower value: Boost pressure too low

P2906 Intake air system: Suspicion of leaks between turbocharger and intake valves

Basically, the first two were likely there before and are ghost codes. The first one is a little concerning as it looks like you ran the engine low on oil but shouldn't be an issue. The last three tell me that the CP cracked and blew.

[CombatNinja]

Looks like you placed higher priority on going fast than properly maintaining the car. Live and learn. Man up and pay for a new charge pipe, fill your car to the proper level with oil, plug your exhaust flapper back in and call it a day.

[jwzimm]

Originally Posted by CombatNinja

Looks like you placed higher priority on going fast than properly maintaining the car. Live and learn. Man up and pay for a new charge pipe, fill your car to the proper level with oil, plug your exhaust flapper back in and call it a day.

That's a little harsh. The exhaust flap is a very common mod and does not throw a light. It is a ghost code that is only readable via OBD. The oil level thing could be anything. The chart says it only sets a light if the condition is detected 50 times or more. It may have been a little low and he took a corner at the wrong time.

As for the chargepipe, yes, that is probably due to running higher than stock boost levels. While they have been seen to fail even at stock boost levels you are still putting more stress on a weak component. It is very possible the dealer will see the COBB tune and deny the warranty. A bigger concern is that they will log the tune into their system and any future issues you may have may also be denied as they are aware you have had it tuned.

Bottom line is you have to pay to play. The cost of a mod is not just the price of the part and installation; it also involves any future upkeep as a result.

[Johnny Boost]

I also had that P2C57 code recently. It's the boost leak code and I think my cp cracked although I didn't hear a pop and my car runs fine. I've got a vrsf cp coming Wednesday. Moral of the story, if you haven't already, make sure you replace your cp before running a tune. It's not worth the headache of your car breaking down.

[CombatNinja]

Agreed. Stock chargepipe is so bad that I replaced it when I was stock. Have since upgraded to the OEM Performance Power Kit and have never had an issue.

[335m]

I want to thank everyone for submitting their advice, whether it was harsh or helpful.

The dealer should be calling me today with the results. After speaking with some local BMW gearheads I have a feeling it could be one of the two following issues:

1. Cracked Chargepipe- I have had the car for 3 months running Stage 1 aggressive after the first couple weeks which I would not expect to cause the problem but I understand the pipe does crack under stock pressure eventually as well.

2. My BMS Performance Intake may have been dislodged. I did not attach it as tightly as I would have preferred because it was difficult to get to without removing the cabin air filter cowl.

In response to the codes referenced by jwzimm:

P3447 Engine oil Level: Too Low
- I purchased the vehicle 3 months ago from a Chevy dealership who put in non-LL01 oil. I am still 800-1000mi from the recommended swap time but the sensor has gone off every once in a while.

P2E4C Exhaust gas flap, activation: Line disconnection
- Yes I did the 'golf tee' mod, and yes I should have reconnected before returning to the dealer.

P2774 Mass air flow sensor, plausibility: Air mass compared with model too high
- Could be the Performance Intake disconnected or cracked chargepipe?

P2C57 Charge-air pressure control, lower value: Boost pressure too low
- Could be the Performance Intake disconnected or cracked chargepipe?

P2906 Intake air system: Suspicion of leaks between turbocharger and intake valves
- Could be the Performance Intake disconnected or cracked chargepipe?

All in all, I regret not popping my hood to inspect for myself. I was stressing out thinking it was Vanos and did not consider the other possibilities. And yes I should have removed my Cobb but I installed it knowing that I was risking my warranty and I will accept the consequences.

I will keep this thread updated with the results, I hope someone else can learn from my experience.

[jwzimm]

As I said in my response, the P3447 code looks to be an intermittent thing. If the car is asking for more oil though, you should add until it reads full. The use of non LL-01 oil is not the issue, it is that the sensor has read that the volume of oil is low (less than 5 quarts). Personally, if I bought the car from a non-BMW dealer the first thing I would do is get the oil changed to ensure it has the correct grade and type in it. Especially if I am going to be running it hard or modifying it in any way.

I would seriously not worry about the exhaust flap issue. Most dealers really don't care.

P2774 may be due to an intake issue. I am not certain where the MAF sensor is mounted but if it is in the intake and it is loose from its connection additional air will enter that would not be metered. This would cause this code.

P2C57 and P2906 are almost certain to be a failed chargepipe as they are post turbo related. Your intake is pre turbo.

Unfortunately I really think that your dealer is going to see the mods (intake, especially if loose) and determine that the failure(s) are a result of non-stock modification. That means zero warranty. If they do this I would pay the diagnostic fee and get the car out of their shop. Go out and purchase an aftermarket chargepipe and install that and tighten up your intake properly. Then go get your oil changed (or DIY) and make sure it is full.

[335m]

Well the dealer just called me and said they need to order a new chargepipe and they put the order in today. Did not hear anything about the tune but I will update accordingly.