Quote:
Originally Posted by andrewc1267
Hi a friend of mine has a 1998 v70 t5 manual he's not on here so has asked me to post for him the car has an under boost issue he's replaced the tcv and borrowed my smoke Pro to check vacuum and boost pipes for leaks and all good the car is ex police and has covered nearly 325k I suggested that the wastegate unit could have a weak spring he is borrowing my mitivac tomorrow to test does anyone know what pressure it should start to open and what pressure should it be fully open the car has the ME7 engine management system
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Probably a bit late posting to this. Standard spring in wastegate usually cracks around 4.5psi from memory and boosts up to around 9-12 psi depending on which turbo is fitted.