Fine Tuning a 360 Magnum with a Brawler "Double Pumper"

Widebands can be useful but not for what you imagine.
Even if it was showing what was happening in the intake and combustion chambers - which its not -its reading 02 in the exhaust - its happening so fast that I don't beleive you can actually read it. And then I wouldn't beleive what it said anyway. Plenty of posts on WBO2 and loggers. Same actually showing what they can and can't do.