have an issue with my z16xep been to vauxhall 2 different dealers and neither have a clue and 3 little garages paid to have all seals replaced only one thats not been done is the middle one in the intake manifold /had head-gasket done and the the head valves all reseated car runs spot on and no...

Hello, I have just installed a sportex performance backbox on my astra 1.9 and when reving past 3k revs there is a horrible whistle comming from somewhere that wasn't there before i installed the back box, can someone please tell me what this is?

Hi All, I have just bought a 2008 Vauxhall Astra 1.7 CDTi and have noticed a 'whistle' noise coming from the front of the car when accelerating at low speeds (under 30mph) At first I thought this was just the turbo but the noise is also there when easing off the accelerator when driving down...