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I believe my GTT's stock BOV is leaking boost due to opening too easily. I have found little bits of information claiming that GTR bov's are supposed to be able to handle much more boost but there doesn't seem to be any definitive answer as to how much.

Now I don't want any wanky noises or legality issues a GTR BOV will look pretty much stock making life much easier.

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heat up the return hose and push it on the end of the bov..

or lube it up a little

Not sure if standard 25's are different to Neo's, but there was no chance of this on mine. The standard GTT return hose could actually fit inside the GTR bov outlet.

I ended up using a large piece of radiator hose to go over the GTR outlet, then pushed the standard return hose inside to act as a reducer. Clamped it down hard and never had any trouble with it. When I put it back on my new setup I will see if my fabricator can make me a reducer out of hard pipe, will make it look a bit better.

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I also wasn't too sure on the install figured I'd just get one and give it a shot sounds like it's very easy the best part is the flange being the same different size outlet isn't a big deal hose is cheap. I'll probably copy Hanaldo's job unless I have something hand around to use as a reducer

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are 32, 33 and 34 gtr bov's all pretty much the exact same thing? Anyone know the exact OD of the gtr bov exit ?

If I remember I will measure it up when I recieve mine. I hope they all work pretty much the same not sure which GTR the BOV I have bought is coming from

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are 32, 33 and 34 gtr bov's all pretty much the exact same thing? Anyone know the exact OD of the gtr bov exit ?

Measured mine last night with some verniers. The GTR bov is a 35mm diameter outlet, you'll need a hose with a 40mm ID. The standard 25 bov is a 25mm outlet.

*EDIT* Millimeters not inches :blink:

Edited by Hanaldo
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Measured mine last night with some verniers. The GTR bov is a 35mm diameter outlet, you'll need a hose with a 40mm ID. The standard 25 bov is a 25mm outlet.

*EDIT* Millimeters not inches :blink:

Thanks for that. If the outlet is 35mm od, a 38mm id silicone reducer should be about right shouldn't it?

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