Bully Dog 40605 Rapid Power Module Review

This tractor performance module is made for the John Deere 8020 and 8030 series with 8.1 liter and 9.0 liter engines. The 8020 series can gain up to 30 percentage more horsepower and the 8030 series gains up to 20 percentage more horsepower. This module provides three power settings, stock, low and high. Read more...