FUEL INJECTORS ARE FAILING ON THE CAR, AS THEY HAVE FOR MANY OTHERS. THIS HAS CAUSED ROUGH RUNNING, VERY POOR PERFORMANCE, HIGH FUEL CONSUMPTION, ETC. I FOUND THAT AUDI NO LONGER MAKES THE INJECTORS, MAKING THEM DIFFICULT TO ATTAIN/AFFORD. I AM CURRENTLY FORCED TO LOOK INTO HAVING ADAPTORS MACHINED FOR OTHER ADAPTORS TO FIT. THIS MAY NOT COMPLY WITH EMISSIONS REQUIREMENTS.*AK