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Tale of two Stage I Evo IX's - one with o2 housing and on with stock o2 housing

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Old Jul 7, 2007 | 09:09 PM
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From: 2003 Evo VIII - Silver
Tale of two Stage I Evo IX's - one with o2 housing and on with stock o2 housing
Tital says it all - two IX's on the same day - both tuned the same way - similar mods - boost level - a/f etc etc

It seems the 02 housing is good for a solid 10 whp or more




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Old Jul 7, 2007 | 09:13 PM
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what kind of o2 housing was it?

ebay, buschur, invidia?

im trying to decide if the name is worth the extra dough
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Old Jul 7, 2007 | 09:14 PM
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^^ beat me to it!!.. also what were the mods on the car?
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Old Jul 7, 2007 | 09:14 PM
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Al, do you recall which brand O2 housing was the IX using???

Thanks for the info!!!
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Old Jul 7, 2007 | 10:31 PM
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my bet is the generic one. ssa, xspower, megan etc.
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Old Jul 8, 2007 | 04:34 AM
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buschur for sure.
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Old Jul 8, 2007 | 05:20 AM
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Looks the car with the o2 housing is running factory boost control. His spoolup is wicked late compared to the first car.
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Old Jul 8, 2007 | 05:38 PM
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From: 2003 Evo VIII - Silver
Originally Posted by RenoEvo
my bet is the generic one. ssa, xspower, megan etc.
Yes generic ebay - not coated
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Old Jul 8, 2007 | 05:40 PM
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From: 2003 Evo VIII - Silver
Originally Posted by NoTec
Looks the car with the o2 housing is running factory boost control. His spoolup is wicked late compared to the first car.
The variation is when I hit the load on the dyno and when I trigger the ramp up and how long I hold it boosting before I let the ramp up go

On the street they would bost spool up about the same
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Old Jul 9, 2007 | 05:44 AM
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what are the mods on the cars?
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Old Jul 9, 2007 | 08:40 AM
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From: 2003 Evo VIII - Silver
Both had intakes ARc vs HKS - MBC's - full 3" exhuasts etc with custom reflashes - the non 02 housing car also had a fmic with stock fmic pipes

Al
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Old Jul 9, 2007 | 10:43 AM
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the rpm on both sheet are set not like each other?
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Old Jul 9, 2007 | 02:24 PM
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did the cars have test pipes or cats?
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Old Jul 15, 2007 | 06:32 PM
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Thanks for the post, Al. Appreciate the expert research on mods like this...of course, that's why I'm getting O2 housing.
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Old Jul 16, 2007 | 08:15 PM
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Al so is it fairly common sideaffect you see, the alil lag in midrange with these o2's?
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