Fuel adjustment

[Superfast Matt McCoy]

Let's say I wanted to adjust fuel enrichment with a knob, using an analog input on the Performance Electronics unit. How would I wire the knob to get a full and even range of 0 to +5v? I'm guessing a logarithmic potentiometer, like 0-5k ohms, with ground on pin A, +5v on pin C and the signal out on pin B?

Anyone have any experience with this?

[Superfast Matt McCoy]

Let's say I wanted to adjust fuel enrichment with a knob, using an analog input on the Performance Electronics unit. How would I wire the knob to get a full and even range of 0 to +5v? I'm guessing a logarithmic potentiometer, like 0-5k ohms, with ground on pin A, +5v on pin C and the signal out on pin B?

Anyone have any experience with this?

[B Lewis @ PE Engine Management]

Hi Matt,

You got it. I would probably use a linear pot rather than log. Once you have it set up you can make the cal curve with respect to fuel % anything that you want by modifying the table for the analog in.