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Ignition retard for Boost

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Is there a webinar or section in one of my courses ? That I can rewatch that covers how many degrees of timing retard pr pound of Boost ?? Hence 2 degrees of timing retard for every 50 H.P. shot of Nitrous . Terry

It depends on the engine but if you need a rule of thumb, 1 degree per psi is a starting point. So if you have a spark map or even dare I say a distributor curve, and you run 30 degrees at peak power rpm, retard that to 15 degrees if you have 15psi boost. But go to an actual dyno and check.

Ok thanks for the reply now I know we’re to start from

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