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jwasbury jwasbury is offline
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Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,422
TT - mechanically you have room for adjustment, yes...but no one is going to be able to tell you anything from this photo.

You have to put a timing light on the car and determine what your settings are at max advance, idle, etc. Generally speaking advancing the ignition from stock can give better throttle response and wake up the somewhat lazy tendencies (off boost) of the stock 930 engine. Use caution, however, because too much advance on boost can lead to detonation, which leads to broken piston rings, melted or broken pistons, and other expensive problems.

The issue is that while advancing the timing brings benefits in off boost response, the timing needs to be retarded on boost and the factory retard control is non adjustable. Many people have used MSD ignition units which have an adjustable boost retard module to get around this issue. But then you are making modifications to the factory stock engine (gasp!), and your car may be slipping down the slope to become a 'franken-turbo' (the horror!)
Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
Past: 2009 997 Turbo Cab / 1979 930
Old 04-23-2014, 10:04 AM
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