it doesnt need a recic one at all, just ove that does open at idel due to vac of the engine and let air in bypassing the MAF sensor - you need a twin piston type - similar to rsturbo.

the std small turbo escos has a recirc one built into the turbo thats what the blanking plate is for in the second pic, so you can relocate it nearer the throttle body - but TBH - ive removed mine altogether - you do get sick of the PSHHHHH all the time