Originally Posted by stroker351w
I talked to a specialist for Audi's by me. I told him that the car was a little laggy and rough on cold starts and would like to get the intake manifold pulled and the carbon cleaned. He said he was hesitant if there was no codes and wanted to see if there was some alternative options because he wanted to make sure I saw some return for my money. He suggested that because it's a direct fuel injection he could put cleaner in through the fuel rail and that should help clean our the carbon. Anyone done this or had someone do this? Does it work. He want's to charge $250 for the service.
you won't usually see a CEL (check engine light), unless of course your car has EXTREME carbon build-up. Consider it analogous to clogged arteries, yes you will still live and function, but it will always make your heart work harder and you will be weaker.
Why was the intake manifold pulled @ 50K? If it was specific to carbon clean, that would be noted.
Also, if you read up on my previous link, you can always try meth and it will help...or just take it to a couple of track days and do an 'Italian tune-up' to it