Going Low or Going High?

maisonmays22

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Oct 25, 2019
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Amarillo Tx
Looking at a few of yalls tunes some of you have ignition set at going low and some have at going high. My car is a 1988 mustang GT with stock ignition set up. So which is it? In the notes it says this is a crucial selection because it can burn your coil.
 
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a91what

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Mod Dude
Apr 6, 2011
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It depends on the system. The following information assumes a TFI system.

The mspnp2 uses a tfi circuit built onto the break out board. These get set to going high.

A Micro uses the wled output to drive the tfi, these have a pullup installed. This get set to going low.

Bottom line is if you have spark advance working on a tfi your settings are correct for the application.