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Alright Josh!

You won't regret it. My CES exhaust has to be one of my favorite parts of my car.

Can't speak for the uppipe yet, but the crosspipe is a bit sketchy with its vw fluttery noise. I can deal with that, though. If you go with headers it won't be an issue, though.

Legacy777 wrote:

legacy92ej22t wrote:Sweet, welcome to a pretty exclusive club! CES rocks!




P.S. When you say header, are you talking about the DP?

Yes....DP....brain fart on my end.

Haha, right on.

I was gonna say, Whaaa? Trevor's making full headers now!! Holy crap, I'm all over it.

Yeah, he just mentioned that they make cross-pipes & up-pipes.

Depending on what I find out when swapping headers around with the borlas, I may be looking for an up-pipe because the inlet size of the stock up pipe is a fair amount smaller then the outlet of the borla header.

Yep, I actually run both the CES up-pipe and crosspipe. They rock too. Like Ryan said, the cross-pipe adds a weird VW burrble that I could do without but performance wise, it's totally tits.

Any idea what's the inner diameter of the up-pipe at the headers?

I can find out for you. I'll be right back.

The up pipe is 1.75" ID on both ends.

Thanks! I'll have to check that against the stock up pipe and the diameter of the header outlet.

Hey Josh, here is flow rates on the up pipe and crosspipe given in an earlier post:


-Stock cross-pipe 208 cfm
-CES cross-pipe 223 cfm

Up-pipe figures

-Stock up-pipe 156 cfm
-CES up-pipe 294 cfm

It was found on this post near the bottom:

http://bbs.legacycentral.org/viewtopic. ... e&start=15

Cool,

thanks

I think those up-pipe figures are against the OEM WRX up-pipe that has a cat though. I don't know what the OEM EJ22T up-pipe flows but I'm sure it's pretty good.

I checked on the diameter of the borla outlet. It's around 2 1/8"

I'm just concerned about the abrupt diameter change....oh well. I'll see how it compares to the stock setup.

Wow, that would probably be a large pipe going into the uppipe. It looks like the pipe for the uppipe isn't increadably large, but the hole is about as wide as it can be for the pipe that is used.

You might want to talk to Trevor and see if he'd be up for making you a custom uppipe or if he thinks it would be beneficial at all. One that tapers down to a 1.75" might be better for flow than a quick diameter change. On the other hand, I am not sure how much room there is under the engine for that size of pipe.

Yeah....I'm not convinced that the borlas are going to be the best setup, but I'd like to at least try them.

If the stock pipes are the best setup, I'll take everything off, including the headers and have them thermal coated.

You don't want to have too big of an up-pipe though either. You want to have a large pressure drop across the turbo for maximum performance but at the same time you want the flow through the headers and up-pipe to not be restrictive either. There is a sweet spot in the equation. Too big and it hurts you, too small is bad too.

Yup.....It's finding that elusive sweet (g) spot