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Discussion Starter #1
Hey guys, Is it correct to have your tach setting in the 4 cylinder mode using the GMPP ?? I'm just starting to wire up my new gauges. Thx.
 

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What gauges?

For Autometer you will need 4 cyl mode and a step up resister. If factory you can use the MSD LS tach adapter.

Look at Autometer instructions. You can buy a kit that has the OP and Temp sensor metric adapters and the required resister.

I don't know if the oem tach will work if you use the step up resister. Therefore I use the tach adapter instead
 

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Discussion Starter #3
Hey John, I'm using the New Vintage gauges. It does mention a step up resistor.
 

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Ok. Basically you connect 12v switched power to the resistor and the resistor to the tack sig wire going to the tach. It boosts the tach sig from the ecm.
 

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Discussion Starter #5
Thanks again John. 4 cylinder mode correct ??
 

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Yes 4 cyl
 
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