So your AFR was pretty flat across the rpm range with no spikes prior to the Unichip?With the Unichip at WOT, AFR is at 11.0. Without the Unichip it would be in the 9.5 - 10.0 AFR.
Yes, I have a Wideband and a boost gauge hooked up and mounted on the steering column.
I don't know what the ECU may/may not have learned, all I know is my AFR consistently stays at 11.0 during WOT. I think what what really made a difference is the tuner told me he was able to add a little bit of timing back in with the Unichip and you can't do that with the MAF calibrator. I know a lot of people are down with the Unichip, but mine seems to be working great. That has been my experience with it, hope that helps. For anybody thinking of using a Unichip with a custom tune; do all of your mods first, then consider getting a custom tune.
I just ordered a wideband so I can test a little ******* way I'm thinking to lean out the AFR for under $100. Plus once I go FI it will be good to have.
Post MAF un-metered air leak controlled by a solenoid at WOT??? Will it work? I'll find out soon unless someone gives me a good reason not to. It should lean the AFR out, but the real question is will it advance timing at all? I'll use some OBD2 scanner software I have to monitor.