Correct.. *Looks at HKS exhaust system* B) thats the biggest friggen muffler ive ever seen
although its much quieter than the stivo..
Intake side of things is stock atm..
stock 1/4 is 14.2.. but thats when brand new.. most stockies are around 150kws atw..
simple exhaust/intake can add up to 20-30rwkws