Ok, wow a lot has gone on since i last checked the thread... I have been experiencing tuning with many cars/trucks including my 4runner for a long time. One thing to remember is that you should keep a pretty rich tune to keep the power flowing. 12:1 is the absolute threshold for me. I tune for approx 11.8:1 and because of OBD II and my stupid SAFC and its tendency to be inaccurate it goes between 11.6 and 12.0:1. Also you have to remember that ideally you would want to own an FTC1 from www.URDUSA.com from Gadget and Brian's company Underdog Racing Developement. The ability to adjust timing is crucial for our application!!! Out timing is about 15 degrees advance around idle and somewhere around 24-30 or so when at full throttle and knock. THe knock sensors don't activate until 3000 RPM (peak torque) and will retard timing in moderation to avoid ping but when the situation gets extreme (ie. 14.7:1 in boost) it will not be able to adjust enough. Also after all this is checked, look at fuel trims and tune for closed loop for best performance and i WOULD HIGHLY SUGGEST the Oxygen Sensor calibration box also from URD to set your in boost AFR correctly! My personal email is JWeinber@vt.edu if you need to talk a little more!