I was thinking of getting the HKS replica exhaust and doing the Magnaflow x pipe mod to it as the consensus seems to be it sounds pretty good with that mod. I currently have resonated test pipes on a stock exhaust and it sounds like s**t lol. I found a good deal on a full OEM nismo exhaust and I know only the muffler is different from any other 08, but I am thinking of buying it just for the 08 y pipe as I read it is dyno proven to add 5-8hp on the DE. I was wondering if anyone has tried HR Y pipe, customer middle pipe muffler/resonator in place of the stock and the HKS replica axle back? I don't know if its even possible since it would require splitting to dual exhaust at the middle pipe. I tried searching and didn't find anything. I like the look of the rear with the HKS replica and the fact that the HR Y pipe is dyno proven to add power.

Btw car is 2005 Anniversary Edition (Rev up motor)

 

you can't run a y pipe with the hks because it is a true dual system

 

I just realized that after I posted lol, thanks for the quick response.