So theres a guy on craigslist in my area that has a barely used, or so he says, Bully Dog Triple Dog Gas Downloader Engine Tuner 40510. It is legit and he only wants 150 bucks for it. One brand new goes for around $380? Is it worth it and will I feel a difference? I do have 35" tires and it would be nice to re calibrate the speedo. Anyone have one?

 

Bump.

 

Bump - I would like to know, as well... Bullydog owners anyone?

 

Save your money. When I bought my truck I swapped my bullydog from a frontier were it made a huge difference to my my f150. I couldn't tell it was on there. If it made a power difference I couldn't tell it. If you do a search there is a lot of bad reviews on the BD. I also read it will make your truck run lean and your trans run hot. I sold mine for $325 on eBay. You may could buy and turn it for a profit! I think the Edge with custom tunes is the most popular programmer that will get great results