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Old 03-06-2009, 01:34 PM   #1
random112
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Member#: 168594
Join Date: Jan 2008
Location: Vancouver Canada
Vehicle:
1993 JDM GC8 WRX
silver with dirt

Default proper DP fit for EJ20G

I have a mostly stock 93 wrx. Picked up a prodrive "shorty" catted DP for it, but need another piece to connect the bottom of the DP to the mid pipe.

My question is: will the short mid pipe sections sold by stromung and prodrive fit up to the stock gc8 jdm exhaust ok? Are the jdm versions not a touch shorter? What part do I need, or would it better to get a custom piece made?

I see some "JDM" DPs for sale that seem to be somehow different? Are these for the newer wrxs or the gc8, and what is the difference?

What about sensors? are these all the same and can be moved over to the new DP?

I assume the td05 and td04 have the same turbo mount bolts for the DP and the issue is one of spacing/length of the dp and midpipe rather than bolt connection compatibility.

I like the cat back portion of the stock exhaust and will keep it. What i want to ditch is the nasty turbo lag and some rattles in the stock mess of DP heat shields...
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Old 03-06-2009, 01:44 PM   #2
sniper512
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Member#: 189923
Join Date: Sep 2008
Chapter/Region: W. Canada
Location: Cranbrook, BC
Vehicle:
1993 JDM WRX
Black

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JDM DPs need JDM exhaust systems to match up for length. If yours is too short I would assume your WRX came with a JDM exhaust and you bought a USDM DP? If so you can buy a USDM exhaust to match up perfectly or get a different DP. Or you could just have a peice made at a muffler shop to fit.
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Old 03-06-2009, 02:00 PM   #3
rockcrete
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Member#: 196721
Join Date: Dec 2008
Chapter/Region: VIC
Location: Maple Ridge
Vehicle:
1993 GF8 WRX Wagon
Black

Default

That's right, the GC8 downpipe is longer while the cat back exhaust is shorter.

You can use a GD downpipe, but you need a GD cat back then too or a visit to an exhaust shop that can fab you up an adapter pipe.

I have a fully GD turbo back exhaust on my JDM GF8 and it fits no problem except for one or two exhaust hangers that don't line up, but it is secure enough without them.
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Old 03-06-2009, 06:12 PM   #4
random112
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Member#: 168594
Join Date: Jan 2008
Location: Vancouver Canada
Vehicle:
1993 JDM GC8 WRX
silver with dirt

Default

thats what I suspected. not exactly compatible...

I like the stock muffler and there is nothing wrong with it. Of course I could change the whole works but ... not sure its smart to spend that much. Or I could order a dp from england or aus. that would cost a ton.

Anyone know a good exhaust shop in vancouver area that would be capable of both installing the DP and custom fitting a pipe section between?

Rocket Rally just said "it won't fit" and left it at that as far as advice - I would rather go somewhere else.

thanks
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Old 03-06-2009, 06:22 PM   #5
rockcrete
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Join Date: Dec 2008
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Location: Maple Ridge
Vehicle:
1993 GF8 WRX Wagon
Black

Default

I bought my whole exhaust from an ebay place in Richmond at a real good price - they sell just the cat back too. It was exoticspeed.ca

The install isn't too bad, just the stuck bolts on the turbo are the problem.....

I think I saw you about a month ago on United Blvd by the Two Parrots too.
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Old 03-06-2009, 07:03 PM   #6
sniper512
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Join Date: Sep 2008
Chapter/Region: W. Canada
Location: Cranbrook, BC
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1993 JDM WRX
Black

Default

It will fit fine just get a peice made to join the 2 up. Most cost effective way for sure.
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Old 03-10-2009, 12:23 AM   #7
random112
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Member#: 168594
Join Date: Jan 2008
Location: Vancouver Canada
Vehicle:
1993 JDM GC8 WRX
silver with dirt

Default

Think I will go the low cost route and make the prodrive GD part fit. Am on the lookout for a muffler shop that can set me straight with a pipe to mate the two including appropriate bung and hangers. Will let you know how that goes.

Would an exhaust shop have any trouble installing a DP? Special tools or knowledge required? I don't have a shop to work in, nor great tools to deal with stuck bolts.

I have never driven on united blvd... car mostly sits on the street here in front of my place in Van.

Do want to check out the GC wagon sometime - wanted one of those but did not want to wait until november to import. may try a gf8 next. is yours auto?
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Old 03-10-2009, 01:37 AM   #8
rockcrete
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Join Date: Dec 2008
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Location: Maple Ridge
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1993 GF8 WRX Wagon
Black

Default

I guess there's another silver JDM around then......

Yeah, mine's auto, and I must say that I'm quite impressed with it - I thought I'd be dissapointed, but it takes me an hour to go 18km each way to or from work and I was sick of riding my OS Giken twin plate clutch the whole way...... the wagon look has really grown on me and it's a handy little car for stuffing full of stuff all the time.
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Old 03-10-2009, 03:03 AM   #9
random112
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Member#: 168594
Join Date: Jan 2008
Location: Vancouver Canada
Vehicle:
1993 JDM GC8 WRX
silver with dirt

Default

ya I dig the wagon look alot, but wanted as much power as possible. but seriously on the street it would be better to have a wagon with 20 less ponies... was on a ski trip last weekend and the car was full to the gills. Still blasted up the logging road just fine but I was a bit hesitant to try and drift it.

I bet there are other silver ones around - I was in the port last summer on annacis island and there were about 10 in the lot there. funny thing is I have seen not a single one in the city here all year. I saw one in port alberni last summer, thats it! My guess is they all get sent back east?

Would love to chek out the wagon some time, will keep in touch.
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Old 03-10-2009, 03:20 AM   #10
rockcrete
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Member#: 196721
Join Date: Dec 2008
Chapter/Region: VIC
Location: Maple Ridge
Vehicle:
1993 GF8 WRX Wagon
Black

Default

I doubt you'll notice less power on the street, the TD04 spools fast....... and I have a full catless exhaust and some extra boost...... not to mention that my friend is custom mapping the stock ecu for me in the near future......
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Old 03-23-2009, 02:16 PM   #11
jstbstn
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Chapter/Region: VIC
Location: jameson@dalesmotorsport.com
Vehicle:
02 WRX - Stage WTF
04 WRB WRX Wagon - Stg 2+

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I put a full GD turboback on my JDM WRX as well and it fit well... had it in my garage so thought I might as well use it. Now I've got a JDM Kakimoto catback sitting in my garage doing nothing if anyone wants it.

Does your buddy work at a local shop that's doing the ECU mapping for you? I wouldn't mind getting mine done at some point and have been looking at options but probably going to grab a Z4 ECU first.
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Old 03-23-2009, 06:40 PM   #12
rockcrete
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Member#: 196721
Join Date: Dec 2008
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Location: Maple Ridge
Vehicle:
1993 GF8 WRX Wagon
Black

Default

No, he's in the Calgary area and does it out of his house - he's coming out this summer to tune my car.

He does have his own website if you want to contact him http://members.shaw.ca/stay_tuned/
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