goucho

I understand where you're coming from... But I think you might think differently when you get your car dyno'd on a VERY hot & Humid day, and it reads like 40 whp lower than everyone else. I think the CF should be used in order to COMPARE dyno's, as it makes things more standard. I am neither FOR nor AGAINST using it (although I'm glad they did use it cause it was an extremely hot and humid day ). Just my opinion

The SAE (Society of Automotive Engineers) Correction Factor considers a standard of 77°F (25°C) day with 0% humidity and a barometric pressure of 29.234 in-Hg (99 KPa) [sAE J1349]. This is a factor of 1.04. So on a hotter/humid day the correction factor would drop according to the following equation: http://www.land-and-sea.com/images/dyno/tech%20talk/SAE_J1349_formula.gif cfis the final correction factor multiplier Pd is the pressure of dry air in hPa (990 hPA = 99 kPa) Tc is the air's temperature in degrees Celsius Most tuners use this SAE correction factor to avoid differences in weather related conditions. It is also important to note that AMS uses a DYNOJET dyno that tends to read on the slightly higher side as opposed to the MUSTANG dyno that reads on the slightly lower side. Here is my Dyno from AMS with the mods described above by Living Legacy. Hope this helps clear anything up! http://i57.photobucket.com/albums/g209/imag33/BenEgan-93oct-stockturbo.jpg