I recently added high idle Mod on my 1996 C3500 wr pringle power-vac truck. Now It's so easy to control engine RPMs with just flip of the switch you set desired rpms. Slow idle 1070rpm, medium idle 1350 rpm and High idle1650rpm. And it doesn't flectuate with compressor use. You set it and forget it kinda situation. So cool, now I don't have to worry about going to high or slowing down to low, always perfect. Very easy install check it out how it works
http://www.youtube.com/watch?v=lxYIF8Ly7XY
http://www.dieselplace.com/forum/showth ... p?t=230913
