Jump to content
SAU Community

Can You Be Defected For Having No Bov?

Bennis

By Bennis,
in Engines & Forced Induction

 Share

Recommended Posts

Bennis Rising Star

Bennis

Posted
Posted

Hey guys,

The R33 I just bought has no BOV and as you would expect has your typical no-bov flutter from the air bouncing back and forth. The flutter only occurs when you put a fair bit of load on the engine and it begins to build boost (2800-3000rpm)... Its a GT3582R btw and atm has a pod but am reverting to standard airbox so you cannot always hear it but its still there and would dare say be quieter with the stock airbox.

The big question is, if a cop, 'somehow' were to hear the flutter, could they pull you up and try and get you for an atmo bov (because they probably cannot tell the difference in sounds). If you tried to argue that you do not have one they would probably not believe you etc etc.

Point is, can I technically be defected for this? Has anyone had something like that happen or a similar circumstance. I dont want to have to buy a plumb back BoV just to make it quiet if I dont have too.

Cheers

Bennis Rising Star

Bennis

Posted
  • Author
Posted

Its not a loud exaggerated 'dose' like you normally hear its actually really quiet and short with no high pitch lol and doesnt happen if youre just cruising which is good because Im not really into the whole fully hektikkkk dose thing haha.

And yes I am more worried about the huge turbo and will be going to my own measures to make that less sus (probably to no avail).

Could do that angry but its still the whole buying and paying someone to weld it in. It hasnt go any stock piping.

SargeRX8 Grand Master

SargeRX8

Posted
Posted

Whack the stock BOV on, pipe it up, then blank it off. Gonna be some effort to fit the stock airbox in with that turbo. I'm gonna assume its got a big intake pipe with a pod on the end. I'd say just make a box out of metal and paint it black. The stock airbox is probably the last concern on any modified skyline drivers mind.

Kane_R32 Experienced

Kane_R32

Posted
Posted

In my old S14, ran no BOV, came out of a round-a-bout one night and shifted gears, cop heard the flutter and pulled me over..

Basically said he heard my BOV, but after explaining it was removed and wasnt running a BOV at all he just left it at that.

Each copper will be different, if they want to defect you, they can and will. Treat them with respect and they may just leave you be.

My 2cents..

GTSBoy Grand Master

GTSBoy

Posted
Posted

No you can't be defected for no BOV. If the cop is a dick he will issue you with a DECC inspection notice and then the inspector will pick out all your defects.

You can. Technically, being part of the inlet tract, it is part of the emissions system and is therefore verboten to alter.

NYTSKY Grand Master

NYTSKY

Posted
Posted

Technically you are correct however a cop won't defect you for a BOV if he cannot see it.

Both times I have had my car DECC inspected I was told by the inspector "Remove your BOV because the people at the EPA don't like seeing them"

That comment alone tells me the pen pushers there are inconsistent in their rulings.

paulr33 Grand Master

paulr33

Posted
Posted

in summary, you can be defected for any modification (removal, addition, change) to the intake / turbocharger system

regardless of what or why

its simply a matter of if the relevant authority notices the modification (removal, addition or change)

Kane_R32 Experienced

Kane_R32

Posted
Posted

Technically you are correct however a cop won't defect you for a BOV if he cannot see it.

I have been defected for an aftermarket ECU, copper couldn't see it.

Basically the police will defect you if the believe its modifies/not original. Then you have to prove it to whoever is clearing the defect.

Bitsushiti Contributor

Bitsushiti

Posted
Posted

I'd say nope, not defectable. When my 33 first went over the pits 5 years ago when I didn't know any different, first thing they spotted was my atmo BOV. Got told to block it off, so I replaced it with a blanking plug and they gave the all clear.

  • 1 month later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      I'm back from the dyno - again! I went looking for someone who knew LS's and had a roller dyno, to see how it shaped up compared to everything else and confirm the powerband really is peaking where Mr Mamo says it should. TLDR: The dyno result I got this time definitely had the shape of how it feels on the road and finally 'makes sense'. Also we had a bit more time to play with timing on the dyno, it turns out the common practice in LS is to lower the timing around peak torque and restore it to max after. So given a car was on the dyno and mostly dialled in already, it was time for tweaking. Luis at APS is definitely knowledgable when it came to this and had overlays ready to go and was happy to share. If you map out your cylinder airmass you start seeing graphs that look a LOT like the engine's torque curve. The good thing also is if you map out your timing curve when you're avoiding knock... this curve very much looks like the inverse of the airmass curve. The result? Well it's another 10.7kw/14hp kw from where I drove it in at. Pretty much everywhere, too. As to how much this car actually makes in Hub Dyno numbers, American Dyno numbers, or Mainline dyno numbers, I say I don't know and it's gone up ~25kw since I started tinkering lol. It IS interesting how the shorter ratio gears I have aren't scaled right on this dyno - 6840RPM is 199KMH, not 175KMH. I have also seen other printouts here with cars with less mods at much higher "kmh" for their RPM due Commodores having 3.45's or longer (!) rear diff ratios maxing out 4th gear which is the 1:1 gear on the T56. Does this matter? No, not really. The real answer is go to the strip and see what it traps, but: I guess I should have gone last Sunday...
    • GTSBoy
      What brakes on R34 GTT(Europe)

      By GTSBoy · Posted

      310mm rotors will be avilable from Australia, Japan, and probably a few other places. Nothing for the front can be put on the back.
    • MBS206
      Starting again

      By MBS206 · Posted

      The filter only filters down to a specific size. Add to that, the filter is AFTER the pump. So it means everything starts breaking your pump even if its being filtered out.
    • MBS206
      What brakes on R34 GTT(Europe)

      By MBS206 · Posted

      Just like in being 14mm too small (296mm) makes it not fit, being 14mm too big (324mm) it also won't fit. You want to find the correct rotor.
    • Kapr
      What brakes on R34 GTT(Europe)

      By Kapr · Posted

      @GTSBoy Ok so that was the shops problem...they showed R33 rotors on R34 page and i did not know 296 do not fit(and are for R33) Yes i bought "kit" with rotors and pads. Pads are ok(i have GTT calipers front and rear). They have some 324mm but no 310mm. So i dont know if they would fit. I have 17inch LMGT4s So another question. Can i fit those in the rear or they are just "too" big for that?
×
×
  • Create New...