Guest harveje Posted September 13, 2006 Share Posted September 13, 2006 My 260 has the dual electronic pickups, and I've been having trouble, so I installed the GM HEI module and unplugged the transistor box. Car runs alot better. Question what is the difference between the single and dual pickups? Instead of one has 2. Is there any andavtage of one over the other? I have both, the dual has a round 3 pin plug and the single has a oval 2 pin connector. The 4 pin HEI swap did help a bunch on idle and missing / misfireing. Thanks, Quote Link to comment Share on other sites More sharing options...
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