Lancer Evolution Car Craze By Sean Toh

Tuesday, January 03, 2006

APEXI ATS (Active Tail Silencer)

ATS (Active Tail Silencer) - Dyno Tested Performance!

Recently, our friends over at Drag Sport Magazine suggested we put our ATS (Active Tail Silencer) retractable valve silencer to the test. The only way to truly tell if the design is a success is to get it on the dyno and run some tests. Of course we obliged, always ready and willing to throw our products into the firing range. The results were very clear, not only does the ATS reduce noise better than a standers type silencer but it makes substantially more power.

Testing was done to Drag Sports specifications using their own R33 GT-R Skyline as the test car. Decibel readings were recorded throughout the RPM range, while horsepower and boost pressure were plotted on the dyno computer. Test results showed an amazing 128 WHP gain in just switching from the standard silencer to the ATS. This increase in horsepower had absolutely no detrimental effect on the ATS sound suppression efficiency. In fact, the ATS actually came in at a remarkable 12 decibels lower than the standard silencer and 16 decibels lower than no silencer!
We were extremely pleased with the results uncovered through D Sports testing. The ATS has proven itself to be the leader of the next generation exhaust silencers.