i have had mine on there for about 8 months now - with hi-flow cats, it took me a while to really love it. I thought it was too loud for the longest time - but just recently i have really come to love it. Its throaty and people compliment me all the time on how sick it sounds.

 

I just got mine installed on stock cats, and am loving the sound. I was afraid I would miss the stock exhaust sound, but HKS just sounds so much more aggressive, without being annoying. Already had a few people chase me down in parking lots to ask what kind of exhaust it was.