Jeff is a straight shooter. The Raptor is a good box. Very smooth. Not "peaky" at all. The SETDR meets at his place about every other month and he always takes the time to talk to the guys individually and find out what kind of mods they are interested in and then give them good advice on how to do their mods. The Raptor is a fine piece of firmware wrapped in a neat package. In my opinion, it doesn't have the low end power of the VA, but it allows the engine to come up a little on boost before really doing it's thing. To me that's a good thing. Less smoke for one thing. Another thing is that the engine and transmission are moving nicely before all this power is added which means less strain on the drivetrain. So if you are towing or just running along at 15-1800 RPMs and get down on it, the power is going to be instant. If you, are starting from a dead stop, on the #2 jumper setting, there will be power but it will be coming up on an exponential curve. Put the jumper on number one and that gives the fast response but you get more smoke with that setting.