At Quality Performance Marine we ONLY use Mercury Factory Diagnostic Tools and Procedures to diagnose any problem or problems you may be experiencing. Our 25+ years of diagnostic experience in conjunction with exclusive Mercury Diagnostics make us a force to be reckoned with. Quality Performance Marine is reputable in the industry for solving problems that have eluded some of our biggest competitors in the business. Do you have a issue going on that no one can seem to fix? Give us a shot! We are eager for a challenge and are ready to uphold our reputation as diagnostic masters!