2012/12/21 22:06:03
Gatesys SW20
Hey guys, I just got a mildly, ported intake manifold
I then ported it more and polished it up really smooth, proceeded too install it then ince bolting it all together realised it does not have a hole for the vacuum sensor (sensor that goes just after the tb/ throttle sensor)
Now I did some research turns out its a gen 3 intake manifold and just not plugging it in is fine just makes your car run.a little richer which in my case isn't really that bad of a thing
So what I'm asking
Is there a way to delete it entirely rather then having it hanging in my engine bay? Would I need a gen 3 tb?
Or is there another solution

Also ported manifold works GREAT
So clean seems to have a noticeably increased power all over the rpm range very happy.
2012/12/22 01:33:51
just_ace
Pics? I don't think the gen3 manifolds bolt up to the gen2 head.
2012/12/22 08:06:02
Gatesys SW20
Oh really?
The first pic shows the old manifold showing where the sensor goes
The second is the new one with the vacuum sensor hanging
Thanks ace :)
2012/12/22 09:25:17
Mrskylighter
You sure that sensor is not a cold start injector? Kinda looks like one to me.
But then again I know very little about the na engines.
 
2012/12/22 09:28:43
Gatesys SW20
That's what I thought at first but got my brother to start the car and nothing came out? So I looked it up an it looked like the vacuum sensor
And if its a cold start injector why is it in the intake manifold and why dosnt the new manifold have one?
2012/12/22 09:36:08
Mrskylighter
Couple of things you can do to check.
Google the part number on it.
Google 3sge cold start injector. When I did this a couple of minutes ago it came up with results about how the gen2 3sge used a CSI and the gen3 didn't. Also something about a JDM gen2 3sge also didn't use a CSI.
 
Why they are in the manifold is because they squirt fuel into the flow of air entering the engine hence enriching it for all 4 cylinders. 
 
This what a cold start injector looks like.

2012/12/22 10:34:17
Reddtarga
Here is a pic of the Gen3 motor.
From the pics, you obviously do not have a gen 3 manifold.   

With this new manifold, you may have trouble starting  it in cold temps without the CSI .

"nothing came out" Possibly because the temp was not cold enough, assuming your system is working properly anyway.
 
Some 3SGE motors did not have a CSI but their ECU's are different.
You may be able to get around it if you check out:
http://www.mr2.com/forums...injector-jdm-3sge.html
 
Good luck, and let us know how it turns out anyway.
2012/12/22 11:58:07
Gatesys SW20
Would I be able to remount it say in the
Intake system?
What temperature does it need to be at to even operate?

Thanks everyone for your help its been good :)
2012/12/22 12:20:23
Reddtarga
"Remount it in the intake system"??
It would need to be post throttle body to work.
 
"Operation temp"
I would suggest you Google up info on the 3SGE CSI operation.
I think the CSI also has a time switch as well as a temp sensor.
The temp sensor would be in the filler neck somewhere, not sure about the time switch location.
2012/12/22 12:55:39
Gatesys SW20
Hmm thanks man
Shall do ill update to let you know how it went,

But apart from that manifold is great
:) very time consuming but worth it provided you have the correct equipment and do your research.
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