Our converters are up to 20% more efficient than our competitors... * Increased horse power to the tires * More efficient mid-range and improved top end MPH * Better manners for street applications * The more efficient coupler means lower rpm at the big end of the 1/4 mile! * Tighter clearances allow us to retain street manners in street / strip applications! * 100% MONEY BACK satisfaction Guaranteed! Inquire for sever duty, off road, or low stall diesel applications