At AAM Competition we saw the need for a factory replacement 370z midpipe, the goal was for the end user to retain the Nissan rear muffler (stock or Nismo) while having the benefit of a better flowing exhaust. One of the other goals was to make a replacement mid section that also interfaced with our Short tails. Our midpipe picked up +22 wheel hp and +20 ft lbs of torque on a stock 370z with only AAM Competition S-line Short Tails!
With the AAM S-Line Ti-Tip Short tails
Baseline is with the S-line Short Tails (in Red) Final pull is with S-line midpipe and short tails, untuned (in Blue)