you don't need stinking o2 sensors!

when it gets tuned the o2 get's disabled and just make sure it's tuned for driveability w/o having to re-enable the o2.

now if you want to have a wideband o2 w/ controller to monitor the afr into a hondata datalog you'll have to splice it into the o2 sensor ecu input wire while keeping the o2 disabled in hondata.

you'll only need 1 and you'll need a wideband controller. i personally like my techedge. i've used it for 3 years now w/ the same sensor full time.