[VF-Engineering]

There are multiple schools of thoughts on whether correction factors for dyno
plots are necessary for vehicles with modern ECU's which already adapt/correct
for ambient temperatures, barometric pressure, and humidity.

In our experience, it is absolutely unnecessary AS LONG AS you dyno the same
vehicle, on the same dyno, on the same day, with the same tank of fuel.

The only time we will post a "Before and After" dyno plot is when all of these
factors are in check. Therefor the Uncorrected results are the most appropriate
for determining actual gains, as those numbers are exactly what the machine is
measuring "before and after" the installation of our software, with absolutely no
other outside influence.

• On a cool day in our shop (under 77°f), Uncorrected numbers will read higher than Corrected.
• On a warm day in our shop (over 77°f), Uncorrected numbers will read lower than Corrected.
• The only constant is that STD correction will ALWAYS be higher (by approx. 3%) than SAE corrected.

As you can see from all of the dyno plots below, the largest change in peak gains
is 6.38 WHP and 7.73 WTQ (from Uncorrected to SAE); which is equal to less than 1.7%.