A/F sniffer

[honda400ex2003]

Anyone ever use a a/f sniffer to see what your machine is running? know of a cheaper one that will record data while riding so you can go back and check it?

Im interested in one for the 400 to see what its running for a/f. it gets what feels like a rich bog at WOT after it warms up but i am still a bit undecided on it. Im going to finally do a decent plug chop again soon but figured i would ask while i was thinking about it tonight haha

steve

[beastlywarrior]

I have one a friend made, it's a cool little device in an altoids can amd you want to get the light right in the middle for the perfect air fuel mix. It plugs into an O2 sensor