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Old 01-30-2017, 12:18 PM   #1
Bobby Fazio
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Default Re: Spark Plugs with Two-Step

With the EFI systems, you just type in any RPM you want and it takes care of the rest. I'm not sure who sells chips that go down to 3000. Don't have anything that low in the super stocker that's for sure!
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Old 01-30-2017, 12:39 PM   #2
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Default Re: Spark Plugs with Two-Step

MSD makes an adjustable module which goes down below 2000 - plugs in like chip - I have mine set at 2800 for launch.
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Old 01-30-2017, 12:46 PM   #3
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Default Re: Spark Plugs with Two-Step

The low RPM chip that MSD sells is red, and it comes with a small slot blade screwdriver that is used for adjusting the limiter RPM screw located on the side of the chip.
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Old 01-30-2017, 04:31 PM   #4
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Default Re: Spark Plugs with Two-Step

Bobby, I use the 8670 MSD adjustable RPM module. Has a lead that plugs into my MSD box where the chip would plug in. Goes down to 3000 RPM, turn the knob to select RPM, in 200 RPM steps.
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Old 01-31-2017, 01:57 PM   #5
Barry Polley
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Default Re: Spark Plugs with Two-Step

Biondo sells a push button below 3000 setup. Nice. Used it for years.
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Old 01-31-2017, 04:57 PM   #6
Bob Mulry
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Default Re: Spark Plugs with Two-Step

https://www.msdperformance.com/produ...ols/parts/8735
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Old 01-31-2017, 11:42 PM   #7
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Default Re: Spark Plugs with Two-Step

I did not see any mention of open or closed loop. Maybe if stayed in open loop on 2-step, could keep from adding unwanted fuel, and then go to closed loop very soon after releasing brake. You would have to be close on your fuel map. Also, you might consider talking to the tech line guys at NGK. I have found them easy to get a hold of, and very knowledgable. I have always been impressed with the quality of NGK plugs.
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