> At low air flow, with the O2 sensor in the header > collector, the transport delay can exceed one second. You've measured this?. That is amazing, > BobR. > Who believes that a dyno and an eprom emulator could make > short work of this. For roughin it in yes, maybe a close initial on WOT, but just a bit easier. Real time emulator, in car, WB O2, and you'd be set in my book Grumpy