I have Agency Power CBE, and Test Pipes installed last month, I have no reference to the difference in HP, but my numbers in the quarter mile dropped 0.2 tenths.
I've driven the car for about 2000 km and canīt stand the noise, sounds too loud specially at low RPM's, so I ordered the Stillen HFC's and I will be installing this weekend.
After the next track event, I will be reporting.
|