F350 with 4.88? Last time I looked, you could only get as high as 4.30. Are you sure you have 4.88? Or maybe you have an F450? Anyway, my programmer is from Spartan Diesel. Really like it. Have 4 tunes, 75, 150, 210, and 250hp. Mostly use the 210, and just started using the 250. The power is...