Whats the diameter of the exhust system stock, when it comes off the headers?

[svxsubaru1]

I need to do some work on it, and was wondering whats the diameter of the exhust system stock, when it comes off the headers? I know this should be in the mod fourm but isent 2.5 inch when the pipes merge a good size to go for when you make one up, for alillte more performance?

[svxsubaru1]

I know some one has to know this. I went through and searched but could only find that it is around 1.5 inches.

[want-a-fast-svx]

Not sure but isnt an Inch increase pretty substantial for just a stock car ? Or is yours modified? Just curious as well b/c since the 5spd swap my exhaust is sitting right on my crossmember and it vibrates and sounds like a riced out civic...:*( Not good.So i too need to know the correct size for best performance all around as well.

[wawazat??]

http://www.subaru-svx.net/forum/show...hlight=exhaust

and remember the Search button above is your friend

Todd

[mbtoloczko]

Here's what's not posted in the other thread:

From the manifold to the primary cats, the ID is about 43 mm.
From the primary cats to the secondary cat, the ID is about 38 mm.

[svxsubaru1]

Thanks, i tried a quick search but couldnet find any thing certain.

Going to get some headers made eventually with 2" from the headers back....