What kind of modules are you running? GM? Chinese? Do you have a good ground on the system. And what voltage are you seeing at the module itself.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

All good questions that I hadn’t thought about. I’ve run grounds all over the charging and ignition system so I don’t think that should be an issue. Mostly run the standard lx301 I guess Chinese modules. Not sure on the voltage so I’ll check that and get back to yall.

I usually run a ground from the mounting screw of the module to the battery ground. Yes just verify your voltage at the module is not dropping off.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

Make sure the module is well heat-sunk, and make sure your line voltage with the engine running isn't spiky or too high.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Yeah! What he said too!

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

I know it’s not to high as it only runs about 13 to 13.5 volts after the relay upgrade. I usually use heatsink paste instead of the line they supply unless that might be my problem?

That should be fine.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

13 to 13.5 is a decent battery voltage number when warmed up.

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Matt Cramer
1966 Dodge Dart turbo / EFI project