Audi Repair Questions? Ask a Mechanic for Answers ASAP
You could have a clog in the cats, this would restrict the flow of the engine and also give you a hesitation.
Did the codes come back? Which codes do you still have?
That is normal, I would have to see it, but when you snap the throttle there will be some vacuum in the air pipe.
You need to get the codes and test drive it while looking at the live data on the scan tool. Look at the o2 sensor data and MAF data. check on the short and long term fuel trims, also when you have a code you can look at the freeze frame data.
Hello again Dan here,
I am contacting you because the post has not been closed or rated. We have 7 days to get a post rated before it times out. When a post times out, that means its no longer on my active list (if you reply I never know it.) You have already paid the fees to get this question answered, but it appears you’re not pleased, or need more help.
Let me help some more. Is there anything else you feel I could offer so you would be pleased with my help?