Single or Twin piston BOV?

[G@NDY]

Just looking on flea bay for a cheap forge type bov, and I dont know wether I need a single piston or twin? Ive read stuff about twins being for cars with air flow meters. So does that mean that i would need a single piston type? or  could i use both???:xconfused :Tongue1

Thanks in advance. Andy:Thumbsup! :Typing :Ladys-man

[G@NDY]

Anyone?:o :Typing

[japjim]

as far as i  know only a single piston bov is required ofr a FD mate. I have a bailey dv24

[G@NDY]

Thanks Jim, and Dave. Single piston it is then!!
What does the bailey sound like just out of interest. ??

Cheers Andy:Thumbs-up