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The mkiv Supra Owners Club

Blow Off Valve Help!


Guest GeorgeW

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Guest GeorgeW

With the anticipation of my first Supra soon in my ownership, I have been making a shopping list, and got to 'BOV's'..

 

I have looked into them quite a bit and decided on the HKS SSQV. Now here is the question..

 

I understand not to go for the replica eBay ones, but what about 'universal' BOV's? not only on eBay but also places like the SupraStore:

See Here

 

Are these OK?

Are they difficult to fit compared to Supra specific BOV?

Why are they that much cheaper?

 

 

Thanks

George

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Tbh theres nothing wrong with the replica HKS valves, they work exactly the same and generally last the same amount of time, the issue is that the plunger is plastic and it deforms with heat and time and doesn't seal and then leaks. You would be better off going with a Greddy type valve (genuine or replica) as they use a metal plunger and it seals a lot better

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The Supra specific SSQV kit includes the mounting bracket and the rest on the hardware to fit it in place of the stock BOV.

 

Supra specific HKS SSQV kit

image image

 

If you bought a universal SSQV you would need to either source the bracket separately or buy a weld on boss and get this welded onto an aluminium intercooler hard pipe, you'd need to fit an aluminium IC pipe kit if you don't already have one fitted.

 

HKS SSQV mounted on weld on boss

image

Edited by Nic (see edit history)
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You haven't mentioned what Supra you are taking ownership of.

 

If it's a vvti it will have a Mass Air Flow sensor in the intake pipe, and fitting a blow off valve will cause fueling issues.

 

If you have the earlier non vvti engine, then you won't have a problem ;)

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Guest GeorgeW

I like the sound, but maybe it's something I would get tired off? I love the sound of them in video clips. I will get the car here, play in it for a few months then decide if it's needed, that may be a sensible way to do it.

 

Is a JDM 2004 supra RZ twin turbo.

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Guest GeorgeW

Well maybe I will put the money into the BPU instead, I didn't realise the OEM valve makes a noticeable noise, it doesn't come out on videos?

 

Also, regarding the BPU, you go with decats, but I'm guessing these don't pass MOT, so what's the crack? Do you just swap them back before MOT?

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