Si-Samuri

Does anyone have a correct vacuum diagram for a b16a into 91 Si. The links to pics in the FAQ no longer work. My car idles rough after initial install and threw code 5 for MAP/vacuum. An underhood shot of someones car set-up correctly would also work. Thanks.

blackmugensivic

Are you using your factory MAP sensor? I just did a SIR 1 B16 swap in my 91 Si Hatch and I used the MAP sensor that came with the motor, that might be your problem but I could be wrong, someone will know for sure. As far as a vacuum diagram I just hooked up the lines to where they seemed like they would go.

blackmugensivic

Here are some pics I hope these help

Si-Samuri

Thanks for the pics. I am however using my factory map sensor. where the three nubs are on the front of the intake manifold mine has another component there with a vacuum line coming out of it. Im still confused. please help.

k20rex

i dont have a diagram but look on the underside of your hood, there should be a diagram there, dont make it harder then it really is just look at it as if you were hooking up your stock engine, if you are using factory map sensor, and running 0bd0 there should be no problem, also a jdm b16a intake manifold has one extra vacuum port that the us model did not have

RB_EJ8

Si-Samuri

So the extra vacuum port is left open?? How can it run properly if this isnt hooked up. Also the hood has been resprayed and the understickers removed. ooops.

k20rex

plug the extra hole!

Si-Samuri

Ill give it a shot and see what happens.

Si-Samuri

I think I am still having trouble. My car seems to be running to rich. My manifold and sensors are different from the ones in the pics. Any suggestions?

crxx

GOOD LOOKIN WITH THE PICS GUYS!

Si-Samuri

My engine is an obd-0 b16a both those diagrams/pics are for a b16a1 i think. I know someone has this set-up in their car. please help with pics.