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I need downpipe info fast!!!!!!
Posted: Wed Sep 15, 2004 4:54 am
by Legacytuner
Does anyone know if the DP flange on the 02 wrx will fit our stock turbos? need response asap
Posted: Wed Sep 15, 2004 5:09 am
by jake15
as far as i know they do, since some people on the boards have them and i'm going to soon.
Posted: Wed Sep 15, 2004 5:11 am
by Legacytuner
So this should work, its three inch mendrel bent catless looks to be a bellmouth?
http://i12.ebayimg.com/01/i/02/11/49/0f_1.JPG
Posted: Wed Sep 15, 2004 5:13 am
by jake15
it looks like it will work but you need to get a custom exhaust made for after the downpipe.
Posted: Wed Sep 15, 2004 5:48 am
by Legacytuner
I WANT STRAIGHT ALL YHE WAY BACK NO CATS NO MUFFLER
WELL, MAYBE A SHORT GLASSPACK!
Posted: Wed Sep 15, 2004 5:49 am
by BAC5.2
Yes, it'll work.
Bellmouth sucks, but it's better than stock, and certaintly cheaper than other options (CES dual dump)
Edit: Can you please not type in all caps?
Posted: Wed Sep 15, 2004 6:45 am
by scottzg
Why does bellmouth suck? I thought a bellmouth with a separator plate was the best alternative out there?
Posted: Wed Sep 15, 2004 8:44 am
by BAC5.2
With a bellmouth pipe, the exhaust gas swirls around in the big, grapefruit sized chamber. This creates a vacuum that tries to suck the wastegate open. Boost creep. I suppose with a BEP style plate, you could reduce boost creep, but flow is not optimal with a bellmouth pipe. It IS better than a flat-plate style downpipe (like the HKS pipe and the stock pipe).
The best alternative is to seperate the wastegate from the main dump as much as possible. This prevents exhaust gas turbulence, and aids flow. The problem with most dual-dump style pipes (BPM) is that they are prone to cracking and not being durable (due to inferior materials and methods of building).
I believe it was SCC that did the comparison test, and said that a dual dump was the best design out there, but it was relatively impractical due to lack of companies who can do it right, and do it well.
I get zero boost creep with my CES downpipe. Most people with bellmouth pipes will experience, at least some, boost creep. There are others, though, that never seem to have a problem.
It DOES seem to be very dependant on the company that makes them.
Posted: Fri Sep 17, 2004 3:49 am
by Legacytuner
Sorry about the all caps man i didnt realize that, thanks for the info
the dp is only $185 shipped!
Posted: Mon Oct 18, 2004 8:25 pm
by azn2nr
and if you look at their website you will see that its only 155 shiped. the ebay ones are more expensive.
on that note i also had a question on this particular dp as i was going to get this one too. its bunged for a wrx o2 snesor. what is the bung size i should use in rebunging the dp at the orignal location? and is their an easy way to just use the wrx location?
sorry bout the hyjack
Posted: Wed Oct 20, 2004 11:18 am
by -K-
My 4 wire O2 came with enough wire I think to use the WRX bung.
For a muffler I'd say go with a dynomax bullit, like a glasspack but no louvers sticking out t mess with flow. They are loud, and don't mess up any of the turbo sound. I'm thinking about putting one right after the DP.
