b8 a4 misfire

[spoolinrs6]

hey guys i have a 2010 a4 black on black 6mt. she has a stage 2 untronic tune. everytime i start the car when it idles it misfires. when i drive it the car drives perfectly fine. can this be a spark plug and coil issue? I changed the spark plugs in different places it still misfires. Has anyone had this problem before?

[Townending]

I had a similar issue and it was due to an injector. You can move them around to see if the misfire code follows the injector.

I have also read that excessive carbon buildup will cause misfires especially on cold starts.

[bluetori]

Have you checked for codes, you can also swap coil packs, is there a CEL?

[STA4]

Try searching, it's a popular topic: http://www.audizine.com/forum/search...archid=6288555

[Sales@DriveAuto]

Could be a number of different things - injector failing, carbon buildup, etc. Feel free to shoot me a PM to set up an appointment if you'd like us to take a look at it.

[spoolinrs6]

no the car doesn't have any check engine light or CEL light. it must be the coil or the carbon build up car has 117k miles