Hello I have a question and I bought myself a Schrick camshaft 272° via the search function search for the right one but found nothing!!! I have read this with the camshaft of the drive for the vacuum pump no matter how or where I get the drive again and what must I change!? Drive the Audi 90 2,3E Have already removed the wedge in the throttle valve, installed a sports air filter, size A diameter 63.5 installed!!! camshaft data: – Gradza hl = 272° – spread = 110° – valve stroke = 11.4mm – stroke in OT = 1.7mm – profile symmetrical Hope you can help me again very well!!! thanks already in advance MFG: Chris