Offroad Trailblazers and Envoys

Bully Dog?

Trailblazer and Envoy related, but not off-road related...

by OKTrailblazer » Sun Aug 25, 2013 11:58 pm

Hi, anyone out their use one of these, Bully Dog 40402 - Bully Dog WatchDog Economy Engine & Vehicle Monitors? I am a diesel mechanic, and I know they do a pretty good job increasing mileage in big boys, well what about gas engines?

Corey
Corey

Lead Diesel Tech. Janzen GMC
Former US Army & OK Army National Guard, Truck Driver

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by fishsticks » Mon Aug 26, 2013 12:24 am

For the money they want for one of those, you could contact PCM of NC and get a real tune (which is considered the proper way to do things for our platform) AND keep your stock PCM as a spare.

It's widely speculated that our ECMs "get used to" those types of tuners and the benefit is lost after time.
I own too many vehicles now. Let's leave it at that.
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