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Jonny H Jonny H is offline
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Join Date: Jul 2013
Location: South East England
Posts: 959
We have around 30 Turbo cars running CDI+ units. Almost all of them are using the distributor weights to control timing and retain the standard vacuum advance and retard. These are physically separate mechanisms to the 'main' curve provided by the weights.

Reports generally come back of better idling, pickup and 'driveability' making driving the car less 'binary' in terms of power delivery. Given the healthy power output of even a standard turbo, it is hard to quantify the exact power gain at peak power, if at all until we get one on the dyno. This all without mapping so any change is down to the dual spark output.

Loren Beggs at 911Design in LA did, however, make changes to the ignition map in a Gemballa Turbo and got the engine to come on boost a little sooner. I don't have the exact details but I'm sure he'd be willing to discuss.
Old 02-27-2018, 03:15 PM
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