Borla Atak vs Mid Muffler WHP Gains - HELLCAT...

Hellcat SRT 6.2L Supercharged v8 Hemi with Mid Muffler vs Borla Atak catback exhaust. Which will get better HP/Torque numbers on the dyno?! A stock Charger or Challenger Hellcat is around 640-650whp on most dyno runs, depends on the dyno, if it's weather corrected etc. These are 2 very different dynos but they both have a reputation of being very accurate so I thought it would be entertaining to compare the 2 runs.
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