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Speedy Squirrel Speedy Squirrel is offline
Rocket Scientist
Join Date: Jun 2008
Location: Detroit
Posts: 898
Sweathogs unite!

Bottom line is that when you take the vacuum line off at idle the timing will advance about 10 degrees more than with it on. If you were timed at the factory spec of 0 + or - 2 with it on at idle, it will be 10 + or - 2 with it off, and it will have a maximum of around 22 under boost, which Porsche considers safe for a stock 930. I think you will notice that it drives a little better with it off.

Originally Posted by equality72521 View Post
Old 04-01-2010, 08:22 PM
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