K-9
Full Access Member
The Whipple cal is like nobody elses. Its done by literally the most advanced Ford calibrator with help through powertrain. It has significantly new software that is being used in future OEM applications. Therefore, the drive-ability is like stock, but better. The difference you'll see is the shifts are more agressive during down shifts, shifts are faster, etc. Others out there may have issues with odd downshifts or flat spots, etc, but there really is nothing like it.
Fuel mileage is about the same on the highway, sometimes 1-2 higher but varies if you have mods like bigger wheels, etc which will lower it 1-2, without towing. City is about 0-2 worse with a heavy foot, about even with normal driving. Towing will typically pick up 2-3mpg because you can tow in 5th and 6th gear.
System is setup for stock exhaust, will work with cat-back which will help get rid of some heat and back pressure. Shorty headers are fine, long tubes require different tunes which we currently do not support.
Testing has been going on for roughly 6 months and we've abused them as much as we can! There is some slight torque reduction during shifts, we can't feel it, but its there to keep the transmission in its proper safety range.
While this is an aftermarket system, it has the feel, reliability and drive-ability of an OEM package.
As for FRPP, were working on that but I can't really comment too much on it as of now.
Thanks very much for the detailed and quality reply.