I used to have the Greddy Evo2 on my car until the midpipe got destroyed. I saved the axle-back but just threw it in the garage and bought a new exhaust.
The new exhaust (my current exhaust) is a Bosal Dual-Tip 3" cat-back. After nearly 2 years with this exhaust it's just too loud for me on my catless setup since a do a good deal of highway driving.
Because the Evo2 is more quiet I am thinking of keeping my bosal mid-pipe on the car from my dual-tip setup and switching out the Bosal axle-back for my Evo2 axle-back... Effectively have an HKS downpipe mate to a bosal mid-pipe which then mates to an Evo2 axle-back.
I am also considering using the Bosal mid-pipe and my STOCK OEM wrx cat-back. This setup I am more worried about seeing as the axle-back may be fairly restrictive and won't work well with the tune on my car that was done with a full 3" exhaust system. I am also worried about the fitment between the 2 pieces (stock axle-back and bosal mid-pipe).
Will this work? I am not sure if there would be fitment issues here or if this would compromise the way my car performs on it's tune. It was dyno tuned last year at a local shop with the bosal exhaust on at the time.