MSD stand alone rev limiter - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 2 (permalink) Old 02-21-2011, 11:09 PM Thread Starter
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MSD stand alone rev limiter

I can't get this MSD "Soft Touch" rev limiter to work with my Marelli Plex ignition. I'm attaching the instructions showing the possible wiring diagrams. I've tried wiring it in using figure 4; engine runs but no rev limiting (using a 3K limit module, or pill). I tried figure 5; and the engine won't run at all, no spark from the coil. I tried those two routes since they apply to a GM HEI ignition, which seems most similar to the Marelli Plex. Any ideas?
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File Type: pdf MSD rev limiter.pdf (398.4 KB, 137 views)

69 Spider, 2L, street
69 Spider, 1.8L, race
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post #2 of 2 (permalink) Old 02-22-2011, 04:18 AM
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I bought a used MSD 6AL on ebay and the rev limiter did not work. I tried switching pills. Maybe it is a common failure mode.

Ed Prytherch
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