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Old 02-13-2004, 10:53 PM   #1
bluestone
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Default Map for WRX single-cat stock exhaust and catless uppipe

Is there a standard map for this? I am inclined toward Cobb but open to other reflashes if they have this off the shelf. have never heard of anyone with this setup. It's basically a JDM STi v7 exhaust setup, the one-cat stock-sized exhaust and catless uppipe. I suppose it would be equal to a USDM stock exhaust or exhaust with 3rd cat eliminator or gutted 3rd cat. Oh yea, a 2004 if it makes any difference.
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Last edited by bluestone; 02-20-2004 at 09:24 AM.
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Old 02-14-2004, 12:33 PM   #2
Jeff_DML
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cobb states the downpipe cat needs to be removed for stage 2, stock 3rd cat is ok. So unless the JDM downupipe cat is highflow I dont think cobb stage 2 is the way to go for you setup. FAQ on their site tells the requirements.

jeff
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Old 02-14-2004, 01:20 PM   #3
A_Train
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For Cobb this would be a Stg1.
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Old 02-17-2004, 10:50 AM   #4
bluestone
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i thought stage 2 is full aftermarket turboback, meaning 3" back, and stage 1 is stock exhaust? i'm only asking because i think the flow characteristics would be somewhere in between
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Old 02-17-2004, 01:53 PM   #5
allanak
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Read Cobb's site. Their stage 2 is mapped for a full TBE, but the only *requirement* is a catless downpipe.

edit: hmm...i guess i misread...gut the downpipe cat

Last edited by allanak; 02-17-2004 at 05:49 PM.
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Old 02-20-2004, 01:52 AM   #6
OvRclockR
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I was running cobb stage2 with only uppipe and downpipe with everything else stock. The power was noticable however you dont get the most out of the reflash.

The turbo lag is longer to peak boost because it the ecu is boosting higher. In some cases you do not reach the target boost of .11 +/- .05.

I think you have enough mods for cobb stage 2.
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Old 02-20-2004, 09:26 AM   #7
bluestone
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so it would still be more effective to go cobb st 2 rather than st 1 despite the shortcomings? thanks for the tips. i was also thinking of maybe getting a used unichip and custom tune... looking for lowest cost solution for the best fit map.... still exploring
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Old 02-20-2004, 08:01 PM   #8
dnidi
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I called Cobb today and asked about this setup:

Cat Less UpPipe --PDE
2.5 Downpipe w/cat --Stromung
Stock 3rd Cat
Prodrive Axel Back

I was told Stage 2. Talked for a while about it, and stage 2 was their recomendation. I was thinking Stage 1.

Anyway, Cobb said it may not be the best setup but it would work better than stage 1
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