Hi I just bought about a month ago a audi Tt 2001 1.8t fwd. Was loving the car started to do the boost control put the gauge was boosting 15 lbs then took it to do the exhaust a magnaflow. After pick my car up from the muffle place around 3000 and 4000rpms the car was bogging out like wouldn't want to pick up more speed. So I diced to come home while coming home the oil light kicked on beeping like 3 time so I went and bought oil was a pint low took it around the bloke light and beep came back and now the motor is also making a noise went and bought a full oil change and filter and did it and it is still making a wierrd nosy in the motor but I am scared to drive it and see if the oil light will come back can anyone please help.