Bullydog

[Tweety16]

I have a 1997 Powerstroke that I put a Bullydog 4-Bank 6-Position chip on, PN 41612. It does not seem to do much except make the engine run rough under load. It seems to be functioning in that when I set the knob to position 2 the idle picks up.
Has anybody else used one? Did it help performance or mileage?

 

[IDIBOBS]

Nope. Never met any one that one of those actually helped in any meaningful way. They seam like a massive waste of money to me.