1. Eliminates the OPF  2. No Check Engine Lights, and no tuning required  3. 992 GT3 Stock - 448whp, 992 GT3 with Street Headers is 476whp (so far)… 4. Weight savings over stock: 321 Stainless Steel Muffler version: 10 lbs lighter than stock Titanium...

1. Eliminates the OPF  2. No Check Engine Lights, and no tuning required  3. Significant power and torque gains: +31whp/+55wtrq! 4. Weight savings over stock: 321 Stainless Steel Muffler version: 10 lbs lighter than stock Titanium Muffler: 25 lbs lighter than stock Inconel 625...