The tuner Im using right now is about as basic as it gets. Trim low, med and high load. Nothing fancy but it work. This is pretty much what the old Juice Box from TB was. You can use a software to play with the base map then the customer can trim up and down. Im using the stock O2 that keep the cruise at 14.7 - 15.0 and I tune the rest. Throttle tweek is 95% gone in all 3 modes now.Of course I don't have to tell you you probably know but for others 14-15 is okay, 12-13 is for power at WOT, misleading, idle can be 15-16 easily (I run 16.1 under cruse, I mean highway cruising, no load all the time, called Lean Cruise), of course I have only been tuning ECUs since 06 and not 32 bit ones but 1-2mb ECUs and using UEGO to do Lambda and EQ tuning. 14.71 is stoichiometric (best burn rate) for those that don't know, what all narrowbands strive to achieve.
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