Quote:
Originally Posted by ManiacGT
So one suggestion elsewhere is pinched vacuum lines which may cause slow release of the WG and contribute to overboost. I'd considered walnut blasting the intake but if it was crap on the intake it wouldn't explain why the issue popped up from nowhere after the injectors/overheat/waterpump episode. Pinched lines might if they're taking things apart and not putting things back together correctly.
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Sounds possible. Replacing the vacuum hose is really easy, it's just getting hold of 3.5mm silicon hose is a PITA in the UK.
You could buy some 4mm silicon vacuum hose and replace them. Something like this:
http://www.autosiliconehoses.com/4mm...ur-colour.html
The Z4 is really easy to do since we have a little more space to get to the turbos. 30min job from start to finish. You just have to be careful when removing the old hose as connectors can break.