Originally Posted by M.Bonanni

The group buy is over unfortunately. The dyno results are here...

DDMotorsports: Berk Technology Cat-Back Exhaust

Basically the Berk Technology HFCs made 19whp and their cat-back exhaust made another 14whp on top of that. On this car, the first exhaust mod you do is going to free up the most horsepower so to have the Berk exhaust make 14whp in addition to the cats is awesome. I wouldn't be surprised if it made 20+whp on a completely stock 370Z.