As of 2015, Bully Dog tuner reviews on AutoAnything.com and Amazon.com are generally positive. The Bully Dog Triple Dog GT Tuner has 4.5 stars out of five based on over 450 reviews on AutoAnything.com; on Amazon.com, Bully dog ratings range from three to five stars depending on the specific model.
Reviewers on AutoAnything.com praise the Bully Dog Triple Dog GT Tuner's ease of installation and compact design. They also note that the tuner increases vehicle power and gas efficiency as advertised. Reviewers successfully installed the Bully Dog tuner on various truck models including the Dodge Ram, Toyota Tacoma and Chevy Silverado. A few negative reviewers, however, express displeasure that the device may void the manufacturer's warranty.