Why are BOV's so Expensive?

**Norbie** · 30-08-2008, 02:31 PM

Originally Posted by JustenGT8

Of course proper beaded pipes and good clamps would sort the issue too

Yep I've got all that now, but at the time I was too cheap.

**trdee** · 30-08-2008, 02:43 PM

i thought atmo bov's were illegal because they can affect your air/fuel ratio.

most likely wrong though

**love ke70** · 30-08-2008, 03:14 PM

Originally Posted by trdee

i thought atmo bov's were illegal because they can affect your air/fuel ratio.

most likely wrong though

only on AFM cars, doesnt effect a MAP sensored car

**tomvale13** · 30-08-2008, 03:15 PM

I only by BOV's with the highest fps ratings. (flutters per second)

:-)

**LeeRoy** · 31-08-2008, 02:18 AM

It's noise that is unnecessary hence it being illegal.

**JustenGT8** · 31-08-2008, 08:45 AM

Originally Posted by love ke70

only on AFM cars, doesnt effect a MAP sensored car

Technically speaking it's a 'change' to the emission system of the vehicle and therefore illegal...the reason is irrelevant.

In practise for vented BOVs, it's noise and emissions (for AFM vehicles).

**love ke70** · 31-08-2008, 09:09 AM

Originally Posted by JustenGT8

Technically speaking it's a 'change' to the emission system of the vehicle and therefore illegal...the reason is irrelevant.

In practise for vented BOVs, it's noise and emissions (for AFM vehicles).

so if running LPG which screams diplomatic immunity to emission system changes, it just comes down to noise?

thanks for the info,

cheers, andrew

**JustenGT8** · 31-08-2008, 09:22 AM

No idea on that one mate?

Is the BOV pre or post mixer? or direct injection LPG?

**love ke70** · 31-08-2008, 09:38 AM

pre mixer

mixer was bolted to mani.

i think its reason enough for them to spot it and give the rest of the car a going over, and the atmo venting crankcase gasses are a bit of a no no so i think i might end up getting rid of it or going plumback, and fixing all the other things while im at it

**JustenGT8** · 31-08-2008, 09:51 AM

Originally Posted by love ke70

pre mixer

mixer was bolted to mani.

i think its reason enough for them to spot it and give the rest of the car a going over, and the atmo venting crankcase gasses are a bit of a no no so i think i might end up getting rid of it or going plumback, and fixing all the other things while im at it

Just lose it if you can mate, otherwise plumb back for piece of mind.

**Stefan** · 31-08-2008, 02:20 PM

Originally Posted by Draven

stefan: what sort of noise are you getting? Normal BOV noise?

My recirc BOV is, unfortunately, pretty bloody loud (which was the opposite of what I wanted

)

Sounds a lot like this, but louder (maybe my bov isn't working correctly... I'm new to turboed engines)

http://www.youtube.com/watch?v=GmDpxmSHCHQ

**Stefan** · 03-09-2008, 11:53 AM

Well, an update:
http://www.toymods.net/forums/showthread.php?t=40293 My BOV was installed the wrong way around - now I now longer get the compressor surge noise, and, very weirdly, the overboost I was getting seems to be gone... :S

I'm not sure now that my stock late mode EVO bov is up to the task. Now that it is working properly, it may be leaking boost, unless anyone has any other suggestions.

Any more recommendations for non-overpriced, purely functional BOVs that are not noisy and don't leak?