Bov Modification

[Jamie XR6]

So the bit on the back of the crossover is completely blocked, and the air is vented through that 10mm hole on the bov???

I think im just confusing myself.

<{POST_SNAPBACK}>

Yes you are correct. The reason for the 10mm hole is to make the venting air sound better as there is a bit more back pressure.

[maximum_velocity]

dont worry mate it wouldnt cause any damage.

If that was the case there would have been reports of it by now.

<{POST_SNAPBACK}>

I just got off the phone to Marcus (Envy) he was really helpful and I appreciate him spending the time to explain it to me. I even got to listen to his over the phone and I'm impressed, it sounds great.

Thanks V8 FRD for putting me onto him.

<{POST_SNAPBACK}>

No worries mate, hope it works for ya

[rboksic]

ENVY-T vented his blow off valve and I can vouch its notiable in the cabin and it sounds quite good. Unfortuntely though if the cops picked up on the this it is illegal I believe, but I doubt it would warrant them taking much action.

Send him a PM and ask what his thoughts are

It's illegal alright LOL. You could always use the excuse that the hose fell off however I think it would be a good idea to plug the hose that you remove. So they would only have to look at it to realise what you have done.

I'm keen on trying it but I would like to get some idea on whether it can cause any damage as I don't know whether guy that said the bov vent can suck air back in is right or wrong. I don't see how this could be the case as the same thing would be happening to any after market bov with a trumpet.

Bain, it's the large return hose off the bov that goes back to the intake pipe. Just don't block off the pipe that goes from near the TB to the bov.

So what about the APS , CAPPA bov's then fitted to ther kits?

It blows under pressure so how can it suck air back in

[Jamie XR6]

So what about the APS , CAPPA bov's then fitted to ther kits?

It blows under pressure so how can it suck air back in

<{POST_SNAPBACK}>

Not when the engine is at idle. At idle there is a slight vacuum.

[rboksic]

So what about the APS , CAPPA bov's then fitted to ther kits?

It blows under pressure so how can it suck air back in

Not when the engine is at idle. At idle there is a slight vacuum.

And is the bov open at idle NO , so can it suck air !

it closes while the manifold is still under pressure due to the spring in thr bov.

[rboksic]

Jamie,

are you in the Navy?

[BRI BRI's XR]

I have done this to several T's with good results as far as sound goes. It wont make any difference to performance. I block off the plumb back line with a piece of 1 inch broom handle, then I join on a hose aquired from super cheap auto which is about 300 mm long moulded like a slight s bend and joined with a copper 3/4 inch plumbing joiner.

This alows you to hide the blow off valve from the federal agents.

As far as sucking in unfilted air, I can't see this happening because evan at idle there is some pressure in the intake from the tubo, but I would not swear to that, perhaps someone can help on that one. Anyway I can't see an after market one at $ 400 doing anything different. I can supply pics if requested.

[Jamie XR6]

Jamie,

are you in the Navy?

<{POST_SNAPBACK}>

Yes mate, remember you came out to Bondi to look at the exhaust I was selling.

[Jamie XR6]

This alows you to hide the blow off valve from the federal agents.

<{POST_SNAPBACK}>

I'd doubt many of them would know what they are looking at anyway.

[sykes]

So does the plug with the 10mm hole in it sound the best? I thought you would just leave it completely open for more sound or does it go a bit ricey?

Mick.