[DallasF10]

Hi, I have a 2014 550i, which is my first car and and looking for help on the exhaust setup. I was looking to do a resonator delete and put in a X-pipe and have the muffler delete, but my only worry is, will I get a CEL if I take off the OEM muffler since it has the vacuum lines connected to the exhaust flaps.

[Rob09msport]

No you just plug the vac lines. Some use golf tee others use a ball bearing personally I would plug at the front of car.

[DallasF10]

Ok thanks, and what do you mean by plugging he front?

[550iBM3]

Do yourself a favor and invest in some high flow mufflers and resonators. It will sound horrible with no resonators or mufflers. I have the same car with downpipes and full shteigen exhaust that has resonators in the mid and rear. Tried a delete and you make a 70-80k sticker price car sound like hot garbage.

[spielnicht]

+1

We're not trying to judge you, at the end of the day it's your car, but unless you feel like driving around with 100% mind-numbing drone, you should look at investing some $$$ in a proper setup vs just removing parts.

Originally Posted by 550iBM3

Do yourself a favor and invest in some high flow mufflers and resonators. It will sound horrible with no resonators or mufflers. I have the same car with downpipes and full shteigen exhaust that has resonators in the mid and rear. Tried a delete and you make a 70-80k sticker price car sound like hot garbage.

[perrymaxima]

What about down pipes does replacing those cause a CEL on the N63?

[Rob09msport]

Their Is a plug you can disconnect or plug the pump at the pump its in trunk but I mean front of line. You can also use bm3 to set it to always open or open in sport mode etc