Older Bully Dog Chip??
 

I purchased my 1999 Super Duty from my brother who knows absolutely nothing about the truck! Added MBRP 4" straight pipe and newer model 18" factory wheels and tires. My question is how can I tell what type of Bully dog chip I am running? It's just the switch that has three positions! It has great power and will burn the tires off, but looking to upgrade and wanting to know what to compare any upgrade too! Thanks for any help!

You would have to look at the chip which is located in your pcm... Once you figure out what it is, we can find out if its something that can be reburned by tuners or not for when you upgrade.