forge motersports diverter valve - Subaru WRX Forum
 
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post #1 of 12 Old 03-04-2008, 12:09 AM Thread Starter
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forge motersports diverter valve

so my brother has a 2008 subaru STi and i aws looking around forum to forum and i saw that blow off valves make your engine run rich if its not running high boost. so i was wondering if a diverter valve would do the same thing? and would it make a blow off valve sound?
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post #2 of 12 Old 03-04-2008, 01:17 AM
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no a diverter valve is what is on the car already.

The level of boost has nothing to do with the AFR when the BOV dumps.

There is absolutely no point to install the diverter valve. Stock works fine why change it?

Robby
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post #3 of 12 Old 03-04-2008, 01:28 AM
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Probably to hear that special sound. I wanted one until I started to read on here about how annoying they are after a while and started to think about it. Besides, with my tbe and drop in filter, I hear that special sound when I really get on it!
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post #4 of 12 Old 03-04-2008, 01:33 AM
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A diverter valve wont make that special sound though. The stock valve is a diverter valve.

Robby
02 rex is gone.
I defected to an evo :)
Evo is gone :(
Now I got nothing.
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post #5 of 12 Old 03-04-2008, 07:49 PM Thread Starter
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yeah so a bov wont make your car run rich or anything?
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post #6 of 12 Old 03-04-2008, 07:49 PM Thread Starter
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where is the resonator on the 07 subaru? the first one or the second one
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post #7 of 12 Old 03-05-2008, 04:14 PM
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Quote:
Originally Posted by sickbro91 View Post
yeah so a bov wont make your car run rich or anything?
It could. DV recirculates air back through the intake. The MAF/ECU is expecting that air to be there. If it is not and just released into the atmosphere ECu will try to adjust fuel mixture to compensate for the loss. It will run rich at first and then probably lean out due to the ECU cutting fuel to match air intake or lack there of.

Still love my 4 rings, but now all I see is stars.
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post #8 of 12 Old 03-05-2008, 10:26 PM Thread Starter
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ahh i see alright thanks a million you guys helped me alot
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post #9 of 12 Old 03-05-2008, 11:23 PM
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Quote:
Originally Posted by sickbro91 View Post
where is the resonator on the 07 subaru? the first one or the second one
They are both catalytic converters. No stock resonator.

Robby
02 rex is gone.
I defected to an evo :)
Evo is gone :(
Now I got nothing.
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post #10 of 12 Old 03-06-2008, 01:22 AM Thread Starter
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so the subaru has 3 cats?
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post #11 of 12 Old 03-06-2008, 05:54 PM
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Which year are you asking about?I believe that the 02-05 have 3, and 06-07 only have 2. I migh be wrong though.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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post #12 of 12 Old 03-07-2008, 02:07 AM Thread Starter
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well i have a 07 and it looks like it goes through the cat then the resonator then the muffler i just dont know which one is the resonator and the muffler because i was reading thing thing on a different forum and this guy said his resonator was at the end
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