Originally Posted by 2007 ZX-10R

27 hp with a 3-1/2 inch downpipe and midsection only? what was your original hp figure and what are your basic mods?

Originally Posted by AHarada

I got a midpipe from the groupbuy a few months ago. I was extremely impressed with the quality of their work, and Grant was great to work with. He made my midpipe with an extra flange between the cat and the muffler so that I could switch out to a straight pipe or replace the cat if I ever wanted to. He also put a bung on for a wideband O2 sensor.

So I decided to go with them when getting my new catback and downpipe. Previously, I was running an HKS downpipe and RB dual catback. I got the downpipe made without the indentation for RHD cars, and a small resonator put in towards the bottom. The catback was made with a canister style muffler and bent "dolphin tail" style tip.

I have it installed and it sounds absolutely amazing. Is MUCH louder than my previous setup, but sounds really mean and clean. I don't have any pix of it on the car yet, as it's nightime and my camera isn't so good with dark shots. I'll post up some pix on the car tomorrow. The muffler exits at an angle and the bent tip exits straight out pointing somewhat down.

The fitment of all of their pieces was equivalent to OEM, the welds are outstanding, and the materials are excellent. Grant is AWESOME to work with and is very quick to reply to emails. He can be emailed at Grant@walkerman.com.au