100% re-solder of critical components ensures superior electrical connections, no intermittent failures and longer product life. On-car vehicle validation routines ensure that modules meet all form, fit, durability and performance requirements. All modules are 100% tested with automated computerized test equipment to ensure full functionality and reliability. MAF sensor automated test platforms read and evaluate MAF sensor output signals during air flow simulation, ensuring each MAF sensor meets all performance requirements throughout entire vehicle operating range and will not cause hesitation or stalling. Guaranteed O.E. fit and function.