Edge or BullyDog

[bb29]

What programmer is better for fuel economy? From what I've seen bullydog has a better MPG increase but I've also seen that you have to run 91 octane. Is that true? I've always had a diesel before this so i don't know much about the gas tuners so really I'm just wondering what you guys think is the better buy and why. Thanks!!

[newdude]

Custom/dyno tune. Black Bear Performance is highly recommended on this forum and its many pages. Driving habits will have a big impact on MPG's, probably more so than a tune. Bigger tires hurt mpg as well.