Power wise isn't going to be much difference. However, the Mugen is more quiet and better built. I have Comptech for 4 years now and I love it. Can't go wrong with either but $600 more is alot though.
__________________
Honda-Acura.net Vigor/TL/CL Forum Moderator.
Comptech Icebox, Headers, Exhaust, Lowering Springs and Sway Bars. Mugen front grille. Inspire tailamps. MOMO Sport 18 X 7.5 +42 offset. Axxis Metal Master front/rear pad. 2 Polk/MOMO 10" subs, Orion Xtreme 500.4 amplifier and Alpine CD changer.