Here is an analysis of the APS RT Spec Exhaust:

www.geocities.com/eenjai/wrxvideo.html

Specs, as per a 2002 WRX STi conversion:

STi engine
STi transmission, mounts
Vishnu Up-pipe
APS turbo back exhaust system

Please tell me what you think. Believe me, this is definitely not the sound of a ricer

 

Wow...that sounds really good! I've never heard something like that come out of a small displacement 4 cyl. I wonder how true-to-life the sound captured by the microphone is. But since the sound was generally the same with the mic inside, windows open, and outside (just louder), the sound reproduction is probably pretty good. I wonder how it would sound from a 2.0L WRX engine?

 

well, surely the sound wouldn't be as deep or throaty, but it still would lend itself to being one of the best exhausts out there for the wrx. I not exactly sure though, so if there is anyone out there with a APS spec exhaust, please post your analysis.

- nick