4.8is misfire, x-pipe issue?

[fmk]

Dealer pulled codes saying it's misfiring on all cylinders and running like sh&t. I'm warranty so no issue there. Worried they may attribute it to the xpipe saying it's running rich or something. Feedback? I know there is an sib out there for the n62 up to a 2005 production date. Car is an 06. Was there an updted sib by chance?

Thx

[mywidebody02]

Inane an x pipe and exhaust and no issues. Probably due to something else.

[Naz24]

I would bet its your intermediate levers, same issue in my 2004 4.4i. Do you ever get a shake in cold weather upon start up?

wait youre in california, you wouldnt experience that. but i would definitely say have them check intermediate levers

[fmk]

Bad coil per dealer..

[TwinsPoppa]

Originally Posted by fmk

Bad coil per dealer..

Does the X5 have a separate coil for each cylinder? If so, does that mean you had more than one bad coil?

I need to research this. For some reason I thought the X5, at least the 4.8, had 8 coils.

[JCL]

Originally Posted by TwinsPoppa

Does the X5 have a separate coil for each cylinder? If so, does that mean you had more than one bad coil?

I need to research this. For some reason I thought the X5, at least the 4.8, had 8 coils.

Yes, 1 coil per cylinder. Either he needed more than one coil, or it wasn't misfiring on all cylinders as originally posted.

[fmk]

Was told one bad coil can cause more than one cylinder to misfire..
Have no idea.