just put recon engine into my 95 subaru wrx , it starts but miss fires , back fires , only runs ok ish on high rpms , low rpms and adle just dies . plus think its running on 3 cylinders very smokey as well i really dont think its engine ie piston rings or head gasket smells like its running to rich , please help

 

Plugs, timing, leads maybe?

 

Was it a 95 engine you fitted or a later spec engine..

 

no not 95 engine was out ov older 93