What BOV do you have and why?

[meddler]

I have a GFB adjustable, If I knew then what I know now, I would have modifed the factory one and left it at that.

 

[Darren_S15]

I have an R-Spec recirc valve as it was half the price of a Greddy one and looks and does the same job.

 

[matt_S15]

Modified stock after using 2 different after market one's.

how and why did you find modifying stock bov works better than aftermarket?? very interested...

 

[meddler]

I know there is a better thread somewhere, but this will give you an idea for starters.

http://www.nissansilvia.com/forums/index.php?showtopic=443844

EDIT: Found some more info here: http://www.nissansilvia.com/forums/index.php?showtopic=26512

There is a link to an NZ site that has the original instructions, but you have to join to get to them.

 

[Auss15]

how and why did you find modifying stock bov works better than aftermarket?? very interested...

The spring is just the right tension,not to stiff like some aftermarket ones which can slow the recirculated air returning to the intake and cause overfueling (which I had) and not to soft, ending up leaking boost pressure. Less fully sik flutter as well

 

[OzJustin]

Can you guys explain to me what damage can occur with AFM cars using atmospheric BOV's?

Because the AFM will read a certain amount of oxygen entering the intake and then some of that is removed via the atmo BOV, closed throttle will result in over fuelling correct? I assume this has the potential to damage spark plugs, catalytic converters and o2 sensors over an extended time? The AFR would also be running a little rich which I understand won't damage your engine, but isn't great for fuel economy or optimum power? Have I missed anything?

 

[Infidel]

No that's pretty much all of it in a nut shell.
Plus is Aus its illegal to have a VTA blow off. Get a diverter valve and a custom or branded inudction box. So you still get a nice sounds with no issues with overfueling or cops!