Obviously neither one makes a ton of power. Anyone dynoed either one?

Is the V2 loud? I hear the Comptech is fairly quiet...?

 

I found one basically 1hp more peak but 5-10 more in the tq department. V2 wins.

 

I have a dyno for a 2004 S200 with the V2 and one with the comptech. I downloaded the dynos form each of the manufacturers webistes, so they obviously show maximum horsepower achieved under ideal conditions. You probably won't see the same results.

AEM V2 Peak HP: 216.6
Comptech Peak HP: 215 @

AEM V2 @ 5900 RPM: 145
Comptech @ 5900 RPM: 141

I'd say you get better all around power with the V2. But you have to worry about hydrolocking if you don't put an umbrella over the filter.