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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
Sounds like you're using the bosch CD ignition with an MSD coil. MSD does not make a coil with the correct impedance for the stock CD or a permatune CD. It will start and run but it can and will cause problems with the stock CDI.

The only coils that have the correct impedence or primary wire resistance for the stock ignition box that will work right are the old oil filled black painted stel casing Bosch coil for your car, the new oil filled brazilian made clear anodized replacement coil (that is unreliable mounted upside down on the fan housing) and the permatune epoxy filled coil made for the permatune replacement CD.

Or get a new MSD ignition box and use it with your MSD coil. That's probably the best thing to do because you don't know if your bosch CDI is good or not.

You don't say you have an adjustable control pressure regulator. If you don't you need to have yours modified by Brian Leask so you can lower steady cruise control pressure to get a little richer mixture during warm steady cruise.

I have one and have it set at about 15:1 steady cruise AFR on the interstate and it runs perfect. 13.5:1 at idle and mid to upper 11's under boost.
Old 04-17-2013, 05:46 AM
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