excel

iTrader: (2)

does anyone have the ws2 cat-back? does anyone know the piping size for it? I've seen it on a few sites and it says 65mm-65mm-80mm / 100mm tip. Does this mean it starts out with 65? or is it 80mm all the way? 80mm is like 3inch correct?

WRX_Mobil

From what your saying it look like your 65mm is a 3.25'' piping and 80mm is a 4'' pipe which is in between the connection to the mid pipe and the actuall exhuast.
and 100mm is a 5 in tip .

it seems about right . or it might be .25'' bigger than mine . i belive mines a 3'' to 4'' to 3'' and a 4.?? inch tip

excel

iTrader: (2)

^ so you have it?

how's the HP increase, sound, and all that?

wvinfernovw

iTrader: (1)

65mm is roughtly 2.5"

http://mg-jewelry.com/mmtoinches.html

excel

iTrader: (2)

hmm, I wonder if someone has the exhaust and give a true measurement

WRX_Mobil

yes sorry 65mm is around 2.5. sorry about that.

thanks for the correction

WRX_Mobil

mines a 3'' from cat back the one you are looking at is a 2.5 ish.(its slightly bigger than 2.5 )


i have the Apexi gt spec . its a 3'' exhaust sound very deep but not annoying at all,it gives a very deep and aggresive tone while accelrating.

my hp increase is not too noticeable , b/c its only like a 10 hp ish increase. a 2.5 piping prob has a lower hp gain .

mine has a very deep tone at idel. but not loud at all. if you have a DP it will sound very aggresive.i mean very MEAN!!.

the subaru 4H engine has its own engine ''accent'' sounding very nice ,Sounds Nothing like a I4 engine. i bet who ever own a subaru with 3'' catback/turboback exhaust system would say it the best sounding 4cyl engine they have ever heard.

ill say go with a 3'' if your looking for a nice deep tone/ with more hp increase , but if your looking for a little louder go with the 2.5.

i say after a while you get used to the tone and sometimes u cant even hear the exhaust , its up to your so yeah.....

05_WRex

iTrader: (4)

I do have the Apexi world sport II and it's not loud at all, it's around 95 decibels if not a bit higher. It has a nice rumble and gurgle once you break it in, overall I love my apexi wsII catback, the pro about this is it looks stock and you don't have to be worrying about the cops pulling u over cause it looks stock. I had this for about 4 months now and I can't think of any con. If you're looking for something not too loud go for this one, if you want something loud and aggressive I suggest go for the HKS carbon Ti catback, that will get u noticed.

05_WRex

iTrader: (4)

Anyone know if I have to get EM for having:

Apexi World sport II
HKS Sequential blow off valve
AEM cold air intake

If so, anyone know a good place, I'm from the bay area.

WRX_Mobil

EM?<whats that?

exhaust manifolds??