hks ssq blow off valve

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Apr 16, 2003 | 05:54 PM

petem

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From: Des Plaines

hks ssq blow off valve

hi guys
i know that there are problems with externally venting blow offs
i know there might be ideling problems, what do I do to correct that problem?
Hks sounds great but is it worth all the problems?
pete

Apr 16, 2003 | 06:21 PM

SouthernCrane

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From: Bay Area

SSQV from HKS has a recirculation kit you can buy. Also i think the S-AFC may be able to help with the idling problems if you vent to the atmos. ( if you go to the APEX site that is what they claim, anyone know for sure?

). Wing240 from this forum has not had any problems with this BOV. I am waiting for my HKS BOV, so hopefully i will be able to confirm this.

Apr 17, 2003 | 12:53 AM

EvoCorp

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Yeah, let me know if the HKS SSQ works. I plan to get that soon.

Apr 17, 2003 | 08:50 AM

Ultimate Racing

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From: Toronto, Canada

We've never had a problem idling with our HKS SSQV Kit. Only issues we have are at high RPM let-offs where the rpms will fall slightly under normal idling conditions but then rise to normal. It has never stalled on us.

Thanks

Darryl

Apr 17, 2003 | 03:28 PM

Claudius

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How would you recommend one makes up for the rich air fuel mixture resulting from the air that's been accounted for by the MAF not being present in the system anymore after having been dumped to the atmosphere?

How's the BOV holding up? Did you try different springs in it? Is it adjustable?

Thanks

Apr 17, 2003 | 04:05 PM

Ultimate Racing

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From: Toronto, Canada

Claudius

First off we've never had a problem with the HKS SSQV installed on our Evo 8. We've never had it stall, and we've never had a need to use a different spring.

However, the HKS Super AFR that we use has a feature called EIDS (or Electronic Idle Stabilizer) which automatically compensates for sudden imbalances in air/fuel ratios at idle and deceleration. ie. it leans out the air/fuel a touch to prevent the engine from stalling.

Thanks

Darryl

Apr 17, 2003 | 04:11 PM

Claudius

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Thanks for the quick answer Darryl

So you're saying the idle stabilizer corrects the problem. Would you recommend one uses a "Super AFR" in conjunction with the BOV or would it be ok without it as well?

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Apr 17, 2003 | 04:17 PM

Ultimate Racing

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From: Toronto, Canada

Claudius

We haven't found a need to use the EIDS. While the function works great for other cars that stall, our HKS SSQV has never stalled our Evo 8. Not once.

Thanks

Darryl

Last edited by Ultimate Racing; Apr 17, 2003 at 04:20 PM.

Apr 17, 2003 | 05:12 PM

Claudius

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Thanks for pointing out that the BOV doesnt make the car stall. I heard you the first two times though

I never said it would make the car stall, but simply run too rich and cause idle instability, which you mentioned as well. Would you call this idle instability negligeable? Just wondering, as friends of mine experienced this idle instability in the past with this BOV. Thanks for your advice

Apr 17, 2003 | 10:00 PM

#10

mobius97

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Joined: Nov 2002

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From: Seattle

So the EVO doesnt use a true BOV it use a CBV like in the 2g's? If this is true than every car is different. Some maybe able to vent to the atmospheres and then some may not. There are several DSMer's out there that can vent all day long and not have trouble while others cant keep it running long enough to get it out of the driveway. Im not too keen on the EVO set up but in my 2g I took a film canister and plugged my dump tube first to test and see if I could vent. I could but but it tended to bog down and hinder performance, almost like it was going to die but then the rpms would pick right back up. Just my 2 cents test the set up like this if it works go for it!!!