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Venting The Stock Bov


Dillz

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  • Three pedals are better then two..
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  • Member For: 17y 6m 7d
  • Gender: Male
  • Location: Melbourne

To try and stop the millions of how to threads emerging I've made this thread. I didn't come up with the picks so credit to the original owner (can't remember who).

Please read this, have a go, then if you get stuck ask a question in this thread.

METHOD

Loosen all screws as marked.

9.jpg

Remove Crossover.

8.jpg

Buy some rubber stoppers like this or similar from supercheap or similar.

7.jpg

Also pick up a mini oil breather (you can also use a stopper with a small 3-5mm hole drilled in it instead of the breather)

6.jpg

Install a stopper in the hose at the back of the crossover as pictured, you may have to shorten this hose as to fit it all back in the engine bay.

10.jpg

Fit the breather to the BOV as pictured.

5.jpg

Now put everything back on tighten up all the screws apply all the clamps and your away :roflmbo:

Edited by XRTPSI
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  • Member For: 17y 9m 19d

Well, I just did this mod, and was very unhappy with the sound with the Vented BOV.. I didn't want the Pshh noise that it made, so I removed the BOV & blocked everything up and the noise changed to an extended version of the factory tu tu tu tu sound. I am guessing I need a POD filter setup to get the chapel street VL noise I was after.

Apparently you can get away with just blocking up the vacuum line ( which now with the bov removed has an 8mm bolt in the end of it ), which I might do after re-installing the BOV again to keep the extended turbo noise.

My bum-o-meter has reported a rather noticeable drop in power when its on boost which seems to come on very slowly with both the vented and bov removal and felt much quicker before I removed or blocked anything up. I cant see that the stoppers I installed would leak, they are on each outlet very tight and do not have any holes in them.

Shouldn't the boost feel the same either way, Bov on or off?!

I triple checked every clamp and made sure everything was on correctly and that there were no boost leaks.

While removing the cross over the first time, I noticed EVERY clamp from throttle body to Turbo were LOOSE, meaning I could undo them all with my fingers.

I just pulled on the pipe from the cross over to turbo up the top, and it popped out from the turbo on the bottom. :smilielol:

Oh well, the APS gear I am getting is now finally ready for me to pick up, so we will see how we go with it because I think it comes with a different BOV and may be close to the noise I am after.

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  • Member For: 16y 11m 3d
  • Gender: Male
  • Location: Sydney

IMO if your after a loud dose or 'tut tut tut' you shoulda gone for one of RAPIDS kits with no BOV, sounds unreal I have no doubt about the quality n performance n best best price around, theres a clip on his website of his car dosing.

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  • Member For: 17y 9m 19d

It actually sounds really good now apparently, all my mates love it, they kacked them selves when I cruised up the street the other day.

I will keep it as is with the BOV removed for now, and chuck the APS gear on her in a couple of weeks.

thanks for the info guys, you have really been helpful.

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  • You are a dead set goose
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  • Member For: 19y 2d
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  • Location: Melbourne

I blocked off the BOV yesterday and it does sound pretty sweet, but I didn't block it off properly and it blew off last night when I went to see Hughesy is Cranky. I went and bought a spare hose that goes from the intake to the BOV and I cut the hose and plugged it up with a chair stopper, but the ones I bought were too big for the hose. If I don't rev out the gear and back off it'll last the day, but I'd definately putting the hose back on. It sounds good but there seems to be a slight lack of performance?

I also tried to put a metal 90° dose pipe on for sh!ts and giggles, but I couldn't get the thing to screw onto the housing on the turbo inlet. It just wouldn't fit! I was so cut coz I'd even chopped up a $70 Monza silicone hose to try and get a little more bend, this just made it worse. The fuking power steering pump made it impossible!

I'll just have to get rid of the factory piping when I get it tuned. Then it'll suck like a Godfrey's store.

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  • Dr. Speed
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  • Member For: 17y 4m 2d
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  • Location: The land of Politicians, Public Servants, Porno & Pyrotechnics

You need hose clamps to keep those stoppers on there. Mine lasted about two seconds before blowing the stopper off. A hose clamp and she was all good.

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  • You are a dead set goose
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  • Member For: 19y 2d
  • Gender: Male
  • Location: Melbourne

Yeah yeah yeah I used a hose clamp, but I didn't realise the stoppers were as hollow as they are. I couldn't wedge it in as far as it needs to be, so I'll head back down to bunnings and get a smaller stopper.

Also, what should I be doing with the other end of the hose? Pic attached...

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