Well, I actually used a A/F gauge temp hooked up to a O2 sensor I wired in before. The O2 sensor was installed last year the FIRST time I was going to start experimenting with EFI.
I may make a temp mount for the A/F gauge so I can watch it when I take the ATV to the cinders on Labor Day weekend.
The carb will hopefully be a limited use thing.
I am working on EFI. Got me some more junk yard parts recently, including a complete Throttle Body that will be easy to mount.
Just got this today...
http://i53.photobucket.com/albums/g57/paysonbadboy/Pic_Programmer.jpg
That's a MicroProcessor Programmer.
I am still learning how to use those things. I got the programmer and compliler working tonite.
I had been playing with the Basic Stamp programmers but teh MicroChip one is way better, and WAY cheaper to buy controllers.
Now I need to work on learning the programming which is similar to some stuff I have played with so it will just take time.
My Micro Controller can take 10bit samples (1,024 or so steps) of the TPS, MAP, O2, etc which is MORE than enough to calculate the Pulse width to the injector(s).
It's just learning, programming, tweeking. Once I get the hardware working, it's all about tweeking the program and connecting a lap top.
Then it will have plenty of fuel under boost and never need to change a jet ever again.
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2003 Yamaha Warrior
Turbocharged and Fuel Injected
Still working on getting it done
2003 Yamaha Banshee
T-5 pipes, big carbs, and some
other mods