So after some looking around i found a few things on the intake manifold and throttle body that had been sealed up. Not sure if they are things that weren't needed after the swap but i figured you guys would know. Here are some pics.

 

the one in the first pic usually goes to your fuel pressure regulator, and the others go to a black box under the manifold for emission purposes, which seems to be eliminated. Go to part source, auto zone, or whatever you have, and get vacuum line caps. They're usally $1 for 8 of them

 

DO i absolutely need to have the first one connected to the fuel pressure regulator?

 

Why would you NOT?

 

Because the car is running fine without it connected

 

is your pressure regulator connected to a vacuum source?

 

yes.

 

No clue

 

Don't get the rubber caps, they'll crack and leak. Get the harder plastic looking ones.

 

Can someone point me in the direction of the fuel pressure regulator? Google isnt helping much

 

If stock fuel rail, its on the timing belt end of fuel rail. Should have a vacuum line coming off of it to manifold vacuum source.

 

So basically the little silver contraption attached to the fuel rail almost right in front of the closed off hose in first pic?

 

Yep, is round and bolted to fuel rail w/two 10mm bolts

 

Wow i have no clue why the previous owner decided to cap it off instead of just reconnect it. Its only like 5 inches away haha

 

P/o sounds like a dummy. Unless it was leaking fuel, that's only reason I can think of. If it has fuel in the line the press reg is bad. Id look over the other work p/o did after that's fixed. I'm sure they f'd up other stuff too.

 

The only other thing i can find that they totally goofed on was putting the vtec on a toggle switch