ok im doing the mpfi swap rite now and im having a little problem finding the vacum diagram on honda-tech. can anyone help me out? also there is a little plug on back of the manafold that i dont know where it goes.

heres a picture of what im talking about. i think there was a form about this.

 

check out the FAQ section at the top of the EF/CRX forum (this one)

 

that hose i believe goes to the brake booster

 

i just did an mpfi swap this week, dont worry about pluging that thing into anything!!!

And vacuum diagram: do a search for vacuum on Honda-tech, google it, hondapartsdeals.com, or even look on ebay (i find that is really good source for engine bay pics in the car sales not parts sales).

 

when i did my mpfi swap i didnt plug that to anything and it ran fine

 

if there telling you not to use it dont jsut leave it like that

go to pepboys and buy some vacuum line caps

and cap it off bc that does go into your IM

 

ok cool thanks for all the help.

 

Just in case anyone is interested in the answer. That's the Fast Idle Control Solenoid. It's basically only used by Si's in freezing temperatures which is why most people can safely ignore that one.