Exhaust valve is only open on the up stroke... if there's nothing to push, nothing is gonna come out.
There'll be like an atmosphere of vacuum against the new throttle plate in the spacer, so /some/ flow is going to still get by, but it's gona be far reduced from original flow.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
|