I have been involved for years in programming BMCS and other systems. I cannot understand why we need to have tuners that have pre-programmed or static A/F ratios, that is, the stock A/F is said to be 14.6 from idle all the way to 4500 before it is allowed to go richer. I understand that this is for fuel mileage. Then I understand that tuners or programmers set A/F's at 12.5 or so thus adding power but destroying fuel mileage. However in programming a "system" I believe a statement could be written into the "program" that states: 'If TPS = or < 30% then A/F = 14.6-1. If TPS = 31% or > then A/F = 12.5-1' . Using this format many curves could be build thus retaining the stock 14.6 or greater, depending upon the vehicle, and any changes such as exhaust, etc. I built heating curves using formula's into programs that could supply a perfect atmosphere in a building at all times, regardless of the outside air conditions.
Perhaps such tuners are on the market for us to modify - anyone got any ideas?

wilamun: 2009 SCAB short-box FX4

 

I'd have a moderator move this thread to the Tuning/Programming forum. This is too specialized a topic for the generic model year truck forum.