[davidoh1989]

i have no idea what is wrong with my car. my car idles really rough and jumpy and the car shakes time to time during the idle. i thought it was my tune so i changed to the valet mode on the cobb and it still does the same thing. I currently have bms dp and intake and ets cp.

the only last problem i had with the car is when i was running the map from protuningfreaks my cp popped off because ets has rubber pieces on both ends so it popped off from the throttle body. I inserted the cp back on and it was still having issues so i checked the tmap sensor and it literally broke in half. I went to go buy exact same one from BMW for $120, but I am still having issues with the car.

any thoughts i should do? should i just take of all the aftermarket parts and take it in to the dealership i still have warranty left on the car?


any input is appreciated thanks!

my car is 2012 n55 e92

[davidoh1989]

this is my idle (park) log

http://www.datazap.me/u/davidoh1989/...g=0&data=1-7-8

[grizz311]

Have you changed your spark plugs?

[davidoh1989]

No not yet is it already time to change it? I have 40k on my car

[Dhillon92]

On a tune, yes its time to change them, its where I would start, I'm sure you're feeling misfires. My car did that and I didn't even get any codes, swapped plugs, all good.

[grizz311]

It depends how long youve been running your car an a tune. Im pretty sure with a tune you need to change them every 20 to 30k

[grizz311]

Regarding the ets charge pipe, mine blew off a couple times too, you just have to tighten the clamps really hard

[LGCubana]

I just had multiple coils go on me at 53K

Same symptoms as you described

[Aaron_N55]

My car has the same issue. No misfire no leaking injectors. Surprisingly the only thing that minimizes it to nothing is 4 Gallons of E85.

The car is not even tuned for that fueling just running COBB Stg2+. But for some odd reason it does.

[Rickygst]

Maybe I'm looking at the log wrong so someone can correct me if that is the case. But you should be under Vac at idle. Check to make sure you hook everything back up correctly. Again if I'm looking at it wrong sorry for the confusion

[weehe126]

The map sensor is befor the TB so wont see vacuum. You could have a boost/vac leak. Since we have a MAF sensor any leak can mess with idle.

[davidoh1989]

so... i switched the spark plugs out and my car seems okay for now..
i still have little roughness with a/c on but it seems normal right?

[pnastyFL]

My cAr used to do this, dealer updated system then it was good for a while, the problem returned when I had to drive about 40 min with my charge pipe hanging off. Once I got everything tightened back up it went away. Before the dealer did the update my car would literally shake then stall sitting at a red light

[Volrath]

Maf sensor is probably bad or your intake is not properly connected. There is a few sensors along the intake that will cause horrible rpm variances at idle. I would make sure everything is connected.