Stillen's cat-back used to be the power king. Is that still true? Are there new contenders?

 

.....And still the heaviest?

 

if you want to believe manufacturers claims...

all the full cat back exhausts gain basicly the same HP...

go by sound and style IMHO

 

As I recall, a year or so ago one of the magazines tested a wide range of exhausts after which the Stillen dual cat-back was considered to produce more power than others. I believe the current Injen SES was not available at that time.

 

Stillen is definately not the power king yet, cuz there were so many exhausts out there hasn't been test on dyno yet. When the magazine did the exhaust comparison, it only compared few exhaust, due to the availability at the time.