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Update
Tried to different throttlebodies. To sets of throttle position sensors and two different idle control valves. Same symptoms.
Hooked it up again to the Bosh Motronic. Seems like I have a lot fewer parameters to view than in a more modern car?
Get some info from the OBD, but little in depht on engine management etc.
This is a professional tool. Any ideas what to look for?
Also tried the Texa scanner. It can not scan boxster 2.5. Works from 2.7 onwards.
Will order a new AOS and change it, just in case.
Any thoughts?
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