On Sat, Jan 30, 2010 at 9:21 AM, Ray Ayala wrote: > My first reaction is that the "10" at idle is a forced artifact of the > logging software due to the idle switch being closed.  As soon as the idle > switch opens the software starts to display the real TPS value.  I'd suggest > repeating the TPS calibration.procedure. Your suspicion was correct Ray. With a bit of iterative trial and error twiddling with TPS Offset and TPS Gain in DLL I got something that looks much more as I would expect. http://www.fantasiaf1.com/images/TPS2.jpg Thanks! Simon.