Hi guys, i noted that CPS front piping and about the rest of exhaust piping is 2.2". My eyes went big like goldfish to note that WAJA CPS comes with 2.2" piping. Sifoo-sifoo, please clarify my statement.

2.2" surely makan minyak for >80% city(KL) drivers :S

*paiseh* I also use naked eyes to see from engine bay, just right after the flexible pipe, the size is 2.2" piping, inlet around 2.1" for galvanized steel material that most new proton using. Hope the cat-con after the header is good quality and don't clog that fast, else, FC buruk.

This post has been edited by kweng84: Mar 10 2009, 11:26 AM

LOL yeah..surprised really!

2.2" pipe for header?? Wah... If B18C (TYPE-R) shouldn't be a problem with 2.2" pipe extractor, but not for CPS . 1.7" pipe 4-2-1 extractor is good enough for CPS already. Stock is just manifold only like MYVI.

*Bigger not always better.*

This post has been edited by kweng84: Mar 10 2009, 02:35 PM

Well, 2.2" piping is actually reserved for MIVEC 1.6 (4g92) at my personal experience. If CPS is acting like MIVEC, 2.2" full piping without cat (replaced by 4-2-1) , definitely it is nicer to cruise in higher rpm band. CAT is like a MUST for every car nowadays to show the gratitude towards the GREEN. So, for power optimization, CAT is the obstacle.

The CPS extractor that i have is 1.7" pipes fully covered for 4-2-1. Bigger not always better because there is delta pressure that is undeniably crucial for an exhaust system to get the right power at the right time.

My 2 cents. I'm looking forward for Sifoo-Sifoo to B.O.T Waja CPS(M). Please share some info regarding it ..dont keep keep!! haha

This post has been edited by kweng84: Mar 10 2009, 04:19 PM

Honestly, we make extractors based on experience and ownself test. I believe there are some with dyno charted extractor doesn't satisfy everyone becoz' everyone has own style of driving. We build to fit most users and of coz to suit ppl's budget

4-2-1, twin bullet package(own recipe), rear muffler(depends which power band u wanna improve).... if piping already 2" or 2.2", then don't change lor. My 2 cents.