Originally Posted by CRiME

Ok, BERK HFCs were removed, and FI RHFCs were installed this week. I can happily say that this is exactly what I was looking for; this product is worth every penny and every minute I spent waiting for it. The rasp is gone and, my biggest positive, the DRONE is gone. I have the Invidia q300 exhaust - this is known to be the 'quietest' catback option for those of us who want a bit more performance without the extra racket. I took a mini road trip with the Berks, and the drone (loudest between roughly 1200 and 2000 RPM) was just about driving me insane. Hit the highway last night, and the new sound was music to my ears.

The power is definitely there, and this is the exact sound that I was looking for; drone free, and just slightly louder & deeper than the stock note. If anyone is looking for a 'humble' exhaust option, I fully endorse the FI RHFC and Invidia q300 combination.