Are these vaccuum lines necessary?

94Blue302GT · Oct 20, 2005

Turbo kit, no EGR or smog other than a high flow cat down lower.
Do I need these lines:
Red line that goes to intake next to FPR.
Green line that goes to EGR/Smog sensor between header and intake.
Black line that runs from underneath intake to a sensor in the pass. corner then dissapears under all those wires.

What are they for and do i need them?

DarkProphet · Oct 20, 2005

They all go to one harness. I dont belive you need any of them and should be able to block them all off at the harness, but doublecheck as im not 100% sure.

94Blue302GT · Oct 20, 2005

so what are they for then?
The black one is a bigger line with a sensor on it, i'm pretty sure it doesn't go to the same stuff as the other ones.

legalize420 · Oct 20, 2005

you need the red one. how are you removing the egr, plunger method ? i would leave it, but thats just me. i had horrible gas milage without it. it recurculates fuel rich exhaust to be burned again.

94Blue302GT · Oct 20, 2005

y do i need the red one, what is it for?
The plunger i have locked half way. Do i still need the vaccuum line running to it? I can't run it attatched to the intake because of the boost, it would boost the exhaust, which we don't want. Right now it's just taped, but I plan on jbwelding it in place.

DarkProphet · Oct 20, 2005

I wouldnt get rid of EGR like that. make sure you tweece it out or get a chip to getrid of it. If not i would run the car with the spout out so it doesnt add to much timing and blow something up.

legalize420 · Oct 20, 2005

94Blue302GT said:
y do i need the red one, what is it for?
The plunger i have locked half way. Do i still need the vaccuum line running to it? I can't run it attatched to the intake because of the boost, it would boost the exhaust, which we don't want. Right now it's just taped, but I plan on jbwelding it in place.

im not sure why, but when i removed both the red a green i had drivability issuses, crappy gas milage, and CEL even with the plunger method. what does boost have anything to do with it?

legalize420 · Oct 20, 2005

DarkProphet said:
I wouldnt get rid of EGR like that. make sure you tweece it out or get a chip to getrid of it.

94Blue302GT · Oct 21, 2005

Well, in stock form, the EGR valve opens and lets exhaust into the intake manifold, correct?
While under boost, the intake will lose the boost and put the pressure into the exhaust system instead when that valve is open.
I lose boost, and besides, I have totally different headers.
I started the car and ran it a bit without the green one to the EGR, threw no codes, and had no issues. I didn't really get to check gas mileage as it didn't really leave the garage, but i'm pretty sure it's ok. How about the larger black line though? Where does it go?
And yes, I may take the spout out and run it at 14 initial.

legalize420 · Oct 21, 2005

94Blue302GT said:
Well, in stock form, the EGR valve opens and lets exhaust into the intake manifold, correct?
While under boost, the intake will lose the boost and put the pressure into the exhaust system instead when that valve is open.
I lose boost, and besides, I have totally different headers.
I started the car and ran it a bit without the green one to the EGR, threw no codes, and had no issues. I didn't really get to check gas mileage as it didn't really leave the garage, but i'm pretty sure it's ok. How about the larger black line though? Where does it go?
And yes, I may take the spout out and run it at 14 initial.

makes sense now. the thicker black line goes to the vacuum tree which is located by the MC on the driverside.

94Blue302GT · Oct 22, 2005

Ok, so just run that one to the other side of the car with everything else that splits off... can do.
The red one, we still don't know what it's for, but hook it up. No problem, i'll probably splice it off the same line as the black one, that way I only need one check valve.
The green EGR, well, like i said, it'll be gone, so I'm just not going to hook that up and see how it goes. Otherwise, i'm searching out ebay for a cheap eec tuner or the like.

legalize420 · Oct 22, 2005

now that i think about it, egr works with boost. you can add boost to a smog legal car so, no loss of boost

94Blue302GT · Oct 24, 2005

legalize420gt95 said:
now that i think about it, egr works with boost. you can add boost to a smog legal car so, no loss of boost

Yeah, actually, it would just shut the valve, wouldn't it? But that would mess up the way it reads then, wouldn't it? Eh, anyways, the intake that i've built doesn't even have anywhere to put smog, so it's out of the question.

Are these vaccuum lines necessary?

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