I am using the WEGO III I got it from Muzzy's. I love it!!
The below is a copy and paste from another thread asking. You will LOVE the WEGO III.
got any info on what you use to put in a a/f guage? like which one did you use, sender unit etc?
i know i am new to this carb stuff and sure others are too.
This thread shows the bungs and plugs as well as the sensor from the NGK meter in my Muzzy's front and rear #2 headpipes.
I have the NGK from Hunterworks and also the WEGO III from Muzzy's that does graphing and I prefer the WEGO III but the NGK works fine as well. The sensors are identical between the two with the only difference being how they are wired. I believe they are VW Oxygen sensors but not 100% sure and they are pre-heated.
Here is a post that shows using the NGK and WEGO III units on my Teryx and the associated graphs from the WEGO.
There are also a few posts in this thread where jetting using the A/F meter is described.
In this post I explain the test ride and show a WEGO III graph that I marked on for emphasis.
You are going to LOVE how your machine runs after using the meter.
Here is what my Teryx sounds like now.
Here is my latest Teryx FPV #2 video from our ride last Monday. I am using my WEGO III today to get my mixture spot on, for ride tomorrow.