i have one that i got off an evo IX. i think its a 34mm but i cant tell for sure cuz the sticker is taken off the top. is this BOV to big?

heres a couple pics with a quarter next to it...

 

r u asking this about getting a recirculation adapter?
no its not to big..

if u need an adapter u can get them for about 20$ off ebay so u can use a tube to recirculate the vented air back tin the intake..

i have a 19mm adapter because my bov is rather far from my intake.. alot of people use 32mm adapters. but your right, its about 34mm inner diameter

 

yeah i know i can get an adapter on ebay, ive just seen other people using smaller BOV's on our cars. my buddy had a greddy rs on his but it was smaller than mine so i was just curious if it was too stiff.

so i need to get the 34mm recirc adapter then right? i just wanted to make sure before i go and buy it...

 

The size of the blow off valve doesn't matter, what matters is if you can get it to recirculate and in this case you can.

 

u should open up that BOV and make sure it only has 1 spring in it.. (they come with two in it, u only need 1) but yes.. u need a recirculation adapter, doesnt matter what size if its for a greddy rs bov

 

ok kool, so then the thread size of the recirc adapter are all the same? its the outside circumfrence of the adapter thats measured in mm? what do you think would be the best size to get? 34mm?

 

best size? doesnt matter..

like i said.. i went with 19mm but my recirculation tube is a little longer then 2 feet. any will work fine as long as there for a greddy type-rs bov.