i think i might have another issue to report about carbon buildup in the 3.2 engine...

my step-father drives an a6 3.2 with the fsi engine. his check engine light has been on for a bit and he said the car has been idling really high on cold startups then going back down to the normal level. he took it into the dealership and they scanned it and found some misfiring fault codes. they said they needed to add a fuel additive because it could be carbon buildup and then wait until the next day to do another cold start. they started it today and still had the same codes/misfires. they told him that he's not using good enough gasoline and that's what's causing the buildup.

him and my mom have been running things by me because they know i like to "tinker with my car". when they first told me about the misfiring and the dealership tech saying "carbon buildup" i told them that i had read about some of the new cars having problems with this issue and since the car was still under warranty, the dealership should take care of it.

like i said, the dealership/service tech is saying that we're not using high-quality gasoline. i practically told my mom "wtf do they expect us to do? drive to the east coast for 93 or mix our own race fuel?!" (we live in cali). anyway, my mom is calling the dealership back to see what the final word is. i just wanted to post this to add some more information. i don't know all of the numbers on my step dad's car to add in any worthwhile data but i will when i can. basically, i'm just posting to keep track of this and checkout all of the info out there.