My MTX-L reads to 100:1. I had to reprogram the range to show this but that was an advertised feature: MTX-L PLUS: Digital Wideband Air/Fuel Ratio Gauge Kit (3 Ft.) - https://www.innovatemotorsports.com/mtx-l-plus-digital-wideband-air-fuel-ratio-gauge-kit-3-ft.html
Now it says 22:1 max but no mention of being able to change it. An email to them should clear that up.
Once you have an A/F gauge you don't need an EGT gauge.
Now it says 22:1 max but no mention of being able to change it. An email to them should clear that up.
Once you have an A/F gauge you don't need an EGT gauge.