I recently changed my fuel filter and my fuel pump went out a couple days later on my way to wprk. I had the pump replaced at the dealer along with an oil change ($900 JOB?!!). Now my car seems to lose power during acceleration till shortly after 4th gear. The only way i feel the car is performing up to par is with the tip. I am new to Audis so im really not sure if this is normal however im almost certain it never felt like this before so im wondering if anyone else has had this problem.