Just a word of warning not to drive too far in limp mode. I have a wideband A/F meter on my car. When the car went into limp mode, the A/F ratios, which were normal prior, went above 18 (lean). I don't know if this is specific to my car's set-up or if all cars when they go into limp mode also have A/F's in this lean area. However, I'm not going to take a chance driving too far with it so lean.

Anyone else have any data on A/Fs when dropping into limp mode?