Jump to content
SAU Community

Recommended Posts

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

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.

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.

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..

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.

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.

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)

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.

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


  • Similar Content

  • Latest Posts

    • Before you blow your car up, have you checked you've made all the correct modifications to the wiring if you're still using the RB20DE loom?   Some things to look at: The pin used for the map sensor on the RB25DET, is the same pin used on the RB20DE for the Ring Gear Crankshaft Position Sensor, no idea what you've got it plugged into now. The turbo pressure control valve solenoid you're talking about on the RB25DET, the same pin is used for the Variable Air Intake Control Valve on the RB20DE.   The factory manual has the wiring pinouts in it for you to check everything. It also has the diagnostics process to read codes out. In addition, there's a great table that shows what sensors and what actuators not functioning will relate to which signals. And Nissan confirm the as everyone else has from experience, the Solenoid being disconnected won't cause a fuel cut. However, the turbo pressure sensor being missing / wrong, WILL cause a fuel cut. https://www.nicoclub.com/service-manual?fsm=Skyline%2FR34-Workshop-Manual-English.pdf
    • I've been hunting info on the G Series II - this is best I have found so far(Link below). Still waiting on the G35-1150 comp map, kind of very keen   So how do we go about getting precision on that little table of yours ?   https://turbosbytm.com/sites/default/files/product/technical-info/Garrett-G-Series-II-Product_Flyer 25 30 35_1.pdf  
    • yeah I get ~0.6L per session into the catch can. very ethanoly. It ends up overflowing out the breather of the catch can on circuit days too even with a 2.3L capacity catch can and I only drain out ~0.6L max. So every session I have to come in and drain the catch can, which is a hassle. So this is me cracking the shits and doing everything I can without removing the motor (back of head sump drain/breather and oil restrictors off the table). plans short term are: full length splash plates remove oem cam cover baffle add foam and reinstall at -10 or -12 AN fittings to the side of the cam covers down to the sump (luckily I already have fittings in the sump) Yes the ~340,000km unopened motor is probably not helping things
    • I'd use any fuel safe foam....mine went in 15 years and 15 rebuilds ago, still getting reused I'd have to say I don't understand swapping to studs to fit a particular baffle unless you are having a massive blowby issue, and even if you are addressing crankcase not head breathing is probably the next step.
    • BTW, the reason I came in here to "update" this list was that the Garrett G Series II range have been released and I've updated the list with their flow details if you're curious to check how they fit with previous Garretts and other brands The G-Series II G35 990 looks like a banger...
×
×
  • Create New...