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GJF GJF is offline
Slantnose from HELL
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Join Date: Dec 2004
Posts: 809
All have their pluses and minuses, but it all depends on your management system or shall we say lack of one? Coil packs are simple and Electromotive offers a fairly simple kit to add them. But they are not as hot as a spark as a CDI system. But even though this is a decent upgrade for CIS injected cars.
If you are running or planning to run aftermarket injection then the sky is the limit.
I still like the look of a twin plug dizzy but not an old 935 dizzy a 20th century hall effect or magnetic trigger dizzy that the aftermarket ECU can control completely.
If you don't like the look of a dizzy and have a aftermarket management system one could opt for COP's coil on plug and run no spark plug wires coupled with a CDI box and you have the best of both worlds.
Coincidentally you can run any of these ignition types with a FAST XIM The coil-on plug ignition controller, originally developed for use with XFI™ systems, is now available in a standalone kit. These kits will enable programmable control of the popular late model coil-on plug ignition systems, independent of the fuel delivery method or any factory computer. The standalone XIM™ can be custom tuned as desired with the easy-to-use adjustment dial pots. This bolt-on solution to coil-on plug ignition is the easiest and most reliable way to run a carburetor or EZ-EFI™ does NOT require XFI™ or OE computer.
Either way you do it you defiantly want to be able to control timing.
87 911 Carrera platform
Twin Garrett's, Big Valve, Xtreme Cylinder Heads, JB Racing cylinders and machine work, custom JE pistons, GT2 EVO cams, GT3 oil pump, modified 3.2L intake, 80mm TB, custom Intercooler, equal length headers, DFI, KEP Stage 2 custom twin disc, G50 custom gear set, LSD, Tilton trans pump, Fluidyne cooler
Old 09-29-2011, 09:18 AM
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