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Old Jan 30, 2005 | 10:23 PM
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gsujeff55's Avatar
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From: GA
o2 housing....

does anyone make a 02 housing with a wastegate dump pipe? if so, who and where?

also, im about to pull my turbo to do the 10.5, what o2 housing should i go with? or should i leave it stock?
Old Jan 30, 2005 | 11:51 PM
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From: NJ
whats the 10.5??
Old Jan 30, 2005 | 11:52 PM
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Hmmm, are you wanting a "dump" pipe that does exactly what it says (LOUD NOISES!) or a divorced wastegate design that seperates the flow and then merges them downstream to still come out your tailpipe, only with less turbulence???

If it's the first one, I'd say a custom exhaust shop could fabricate you one. Extra drag points if you exit it thru a cutout in your bumper cover. I could just imagine the tech's face if you tried to pass emissions with that...haha

If it's a divorced wastegate design you wish for, I have the Vishnu turboback that divorces the flow for several inches and then merges it smoothly with the rest of the exiting exhaust gases. Pain in the ace to install however, requires dropping the radiator and lower intercooler hoses. If I could do it all over again I'd have got the signature series and my install would have been about 3 hours faster. FWIW Andrew from Dyno4mance and I had the same setup on our cars save exhausts, dynoed within a day of each other...and made the same power! Your results may vary, however, the turboback is just so slightly quieter than the signature exhaust. Your power and hearing levels may vary. Or Helix sells just an O2 Housing that would do essentially the same thing, for about 2 Benjamins, give or take.

From what I've seen on the dyno, the stock O2 housing isn't necessarily the bottleneck everyone thinks it to be. I'd save my money for something else, in your case prolly the Alky Injection or some handling bits (based on your sig). That's my $.03
Old Jan 31, 2005 | 04:55 AM
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From what I've seen on the dyno, the stock O2 housing isn't necessarily the bottleneck everyone thinks it to be.
I agree....all the aftermarket ones I have seen are inferior to the stocker, not because of flow but because none of them to date utilize the lower support lug that bolts to the block like the OEM....this offers a lot of support to the turbo assembly
Old Jan 31, 2005 | 06:28 AM
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ok, thanks for the info!
Old Jan 31, 2005 | 06:44 AM
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From: Inland Empire, CA
Originally Posted by Dyno4mance
I agree....all the aftermarket ones I have seen are inferior to the stocker, not because of flow but because none of them to date utilize the lower support lug that bolts to the block like the OEM....this offers a lot of support to the turbo assembly
I agree with Andrew
 




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