Hi im new to this but i have a problem with my a3 agu engine 1999 the earlier engine with the square plugs it has a shudder as it cums
into boost at 2000 revs and me and my mechanic friend are stumped i have replaced a few vacuum hoses, maf sensor, spark plugs and
have tried new coilpacks i have been told by afew people that it mite b the crank timing sensor or the boost pressure sensor as iv been informed my car has no boost sensor and that my timing is fine i am at a loss could any1 on here plaese help me !!!!!!