Ok cool. Thanks a bunch, I'll definately be giving them a call.

The Edge would definitely correct the speedo and all the shifting issues that go along with much taller tires and an uncorrected speedo. If you are definitely going to add a CAI, you might want to consider the Gryphon. I say this only due to the fact that on a stock truck, some of these CAI will cause the motor to throw a lean code. This has to do with the fact that the mass air sensor is factory calibrated for the tube which it is placed in. Change the diameter of that tube and now that sensor is reporting false figures to the PCM. This can cause all sorts of issues. The Gryphon is an Edge with the added functionality of accepting a "custom" tune. You would need one in order to compensate for the CAI different air path. I would talk to the people who make the Gryphon and ask them if they have dealt with which ever CAI you plan to purchase. This way they can tell you if they have a tune which will work!

Well, you seem like the best person that I should ask concerning an Egde programmer. I have an 07 5.4L fx4 and I'm planning on running 35's. If I were going to get an Airaid cold air intake upgrade, aloung with a super 40 series Flowmaster, would the Edge be beneficial in helping with correcting my speedo? I'm not too interested in the HP upgrades, but would it help HP,MPG's, etc? Thanks a bunch