i finally got an aftermarket exhaust, i got an Apexi WS2 exhaust with a Megan Y pipe, both very good quality and welds are great too

i took a before and after video since there is only 1 video on youtube of the apexi ws2 exhaust but thats only the AFTER, and his car is bone stock with stock Y pipe

mods that i have that might have changed the sound a bit are: 5/16 copper iso thermal spacer, stillen z tube, jwt filter

also if you hear a high pitched noise that from the video camera

who makes the cf diffuser?

I have the same exhaust setup. WS2 + Megan Ypipe, intake, and spacer. The Megan y-pipe did not change the sound of the WS2 on a stock y-pipe at all. Great setup if you want a louder deeper oem like tone and zero drone

gt spec use to make them, but now they are focused strictly performance, so they sell black top aero parts

but some people on the forum sells cf rear diffusers too

true, but it does open it up a bit compared to the oem