car is 99 civic lx
motor is 2001 b18c1

went to state ref failed on visual for wrong evap and needed a integra evap so now i installed the evap from integra but having a hard time with the last hose connection

integra has two way valve and three way valve
99 civic has two way valve but no three way valve
what parts do i need to make my 99 civic have a three way valve

 

i would just throw it on there, if it doesn't fit, use something to adapt it there, as long as it doesn't throw a code and it doesn't run bad you will probably be fine

make him search for where it goes, if he asks any questions just say your mechanic did the work and play dumb

 

I guess i try that and drive around to see if any codes pop up