Just want to double check my vacuum before putting everything together. First question, I installed an aftermarket FPR, is it ok to connect the vacuum line to the original nipple for the original fpr? The nipple on the lower intake manifold pointing towards the firewall.



Boost gauge, I was going to grab the vacuum from where the original boost sensor took its vacuum which is the left side of the UIM.



And as for the microtech, the bottom nipple of the three nipples in front of the UIM.



Last but not least, I omitted the OMP, but left the oil injectors in place. Should I cap those babies off. Thanks in advance.

 

I would have pulled the oil injectors out, they do get in the way. Banzai Racing sells a removal kit with plugs that will thread right in.

Your vacuum routing sounds fine to me though.

 

I don't recommend using a vacuum nipple hanging off an intake runner. Reversion throughout the runners will cause pulses. That means any sensor that's tied off of that vacuum source will get pulses meaning it will output... pulses.

Use a vacuum spot off the front of the upper intake manifold just behind the alternator. That's a source off the surge plenum; the mixing spot of the intake. No pulses.

B

 

You should cap the oil injectors. The top nipple of the oil injector is a source of air during the intake *stroke*. The stk system uses metered air at the top of the injector. If left open it will draw in unfilterd unmetered air. FYI this air is part and parcel of the idle air on a stk car.

A simple cap should do or a dab of RTV. Idle air will be effected when the injector draws in no air.

I don't see the stk boost sensor nipple being a problem if you use the stk orifice in the vacuum line that attaches there.

And if memory serves your right to use the bottom nipple on the front of the intake 'cause that's the only one that is vacuum.

 

He is only attaching an actual electronic sensor to the bottom port on the front of the plenum. The rest are for mechanical things (FPR and mechanical boost gauge).

 

Depends on which UIM you are actually using. Your first picture is an FD UIM and the second one is an FC.

 

I will be using a FC UIM.
Btw, my boost gauge is electronic.

So to use that nipple or not to use that nipple? Thanks

As for the rest of the post, the FPR and Microtech vacuum is fine, correct? And the OMP, I will def look into blocking them off. Thanks for everyone's input thus far.