[Mk2] [Turbo] Goose Honk - re-circ solutions?

[b4ss]

Hi,
I have standard car apart from Apexi induction kit;
the goose honk is starting to annoy me..

I came across this solution and was wondering if anyone fitted it:

https://www.z1motorsports.com/intercool ... -7494.html

Explanation of why the Honk happens is here:
http://bde-performance.com/goose_how.htm

My preference is to keep the standard BOV..
Any have any thoughts on this?
Thanks,
Tony

[Ryan S]

I've thankfully never heard the honk but I've heard of it numerous times. I think your only option is to go for an aftermarket BOV, I know the new greddy's can be set to recirculate as can the HKS. Or you can vent to atmosphere of course.

[simpson_eh]

i had it, it really is awful lol. either put the oem filter back in as this supresses it(but is actually still there) or aftermarket dump

[merde2]

This is interesting, I also have an apexi air filter fitted and have just removed an atmospheric dump valve (Bailey's) to go back to stock.

Since doing this I've noticed a noise and assumed I'd plumbed the stock valve incorrectly or there is an issue but perhaps it is this goose honk..

Does anyone have a clip of what this sounds like?

[jon]

When I first got my MR2 it suffered from the horrible goose honk sound with an Apexi air filter, so it was replaced with an HKS SSQV BOV.

After quite a few years I fitted a ST205 Chargecooler and wasn't happy with the HKS BOV fitment. So I got the original BPV and tested it as per the BGB. I found one of the ports on the BPV couldn't maintain a vacuum, it had a small internal leak.

After replacing it with a BPV with one that did pass the vacuum test I never got the goose honk noise again.

TLDR, Check both ports on the BPV can maintain a vacuum, sometimes they can leak which causes the goose honk noise.

[b4ss]

When I first got my MR2 it suffered from the horrible goose honk sound with an Apexi air filter, so it was replaced with an HKS SSQV BOV.

After quite a few years I fitted a ST205 Chargecooler and wasn't happy with the HKS BOV fitment. So I got the original BPV and tested it as per the BGB. I found one of the ports on the BPV couldn't maintain a vacuum, it had a small internal leak.

After replacing it with a BPV with one that did pass the vacuum test I never got the goose honk noise again.

TLDR, Check both ports on the BPV can maintain a vacuum, sometimes they can leak which causes the goose honk noise.

Ohh that is interesting, I had a look at the BGB book for testing the BPV, to me it seemed as one of the connections can push alot of air through while the other is restricted. I didn't think to test a vacuum. thanks for the heads up.
Tony