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Old 03-27-2001, 09:55 PM   #1
blkwag
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Black in Recovery...

Post HKS super sequential BOV compatible with MAF systems?

I heard that the HKS super sequential bov will work with MAF systems venting to atmosphere and pose no problems to the fuel readings since it uses a pull type diaphragm instead of the tradition push type diaphragm like most others.
Is this true and has anyone with a turbo with MAF run this before without running rich conditions?

I really like the HKS SS bov the best.
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Old 03-28-2001, 09:39 AM   #2
yebokmj
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That's the BOV I am getting installed tomorrow to my MY98 RS Turbo along with a HKS Super AFR these two products, are both supposed to be great for Blowing off into atmosphere. PM me on Saturday or Sunday and I will tell you my thoughts after a day of driving.
Joshua
Subaru Salesman
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Old 03-28-2001, 08:07 PM   #3
blkwag
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Thanks, I will do that.

Can you also do me a favor and drive your RS with the AFR set flat or bypass mode?

The reason is that with the AFR, you can partially tune out the rich condition that you get when the bov vents to atmosphere.

I just want to know if it runs good without using a fuel controller like the S-AFC or AFR.

thanks.
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Old 03-28-2001, 08:49 PM   #4
GDA
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Worst comes to worse, couldnt you just reroute it back into the system with any aftermarket BOV?

EJ20WRX
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Old 03-29-2001, 09:55 AM   #5
blkwag
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yeah, but then you lose the cool sound of the HKS, which is the primary reason why a lot of people get it.

Heck, most people probably get an aftermarket boost gauge for the sound or when running increased boost that the stock bov can't handle.
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Old 03-29-2001, 05:06 PM   #6
kaos200
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don't you mean bov not gauge?

"Heck, most people probably get an aftermarket boost gauge for the sound or when running increased boost"

[This message has been edited by kaos200 (edited March 29, 2001).]
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Old 03-29-2001, 09:04 PM   #7
blkwag
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Duh,

That's what I meant. Thanks for the clarification.
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Old 03-29-2001, 11:13 PM   #8
Orbiter
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Anyone know if a Greddy Type-S bov would work on the WRX when vented to atmosphere??
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Old 03-30-2001, 07:22 AM   #9
Blugin
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Question

How about this...
Has anyone just taken the recirculate tube off of the factory BOV?? The sound would be there. The only issue is that it would run rich for a second between shifts. I bet it is not even noticeable. Would this trigger a CEL? I am pretty sure the ECU can tolerate a temporary rich situation, my civic ran rich most of the time and it only threw a CEL when I added injectors and it wasn't tuned. Am I missing anything? Would disconnecting the recirc. hose have any adverse effects??

[This message has been edited by Blugin (edited March 30, 2001).]
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Old 03-30-2001, 07:37 AM   #10
Strepto
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if you remove the reticulation tube you'll end up with two things, 1)a vacuum leak 2) the engine will run rich on shifts as stated, but it IS enough to cause the engine to bog down and not run properly.
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Old 03-30-2001, 07:45 AM   #11
Blugin
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Well you would of course plug the hose. I thought that could go unstated...
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Old 03-30-2001, 08:00 AM   #12
blkwag
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Get rid of all three cats, put on a straight thru muffler, vent to atmosphere and enjoy the fireworks out back.

I was thinking of doing this but since my car is a daily driver....
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