Do I need this... Exhaust Q

[david-b]

I asked this question before, but no one seemed to know what I was talking about, so I got a picture of it ... lol

What is the pipe going from the CAI? It goes to a sensor and then attached on to the exhaust on the DP. When I put on my new header and exhaust, do I still need this? Will I get a CEL without it?

[---]

That's the vacuum pressure line isn't it? Last I checked they were necessary....I may be wrong though.

[david-b]

How can I add my header/exahust when I have no room for that. There's nothing to connect it to on the header

[gthompson97]

i've seen a few n/a eclipses and talons with that and i've always wondered what it's for. i don't have one of those and my old motor didn't either. i have a buddie that has one of those on his eclipe though and it was blocked off with a cap at the end of the exhaust fitting part.
i'd say just take the whole thing off.

[david-b]

It does have a sensor on it. Im going to disconnect the sensor and see if I get a CEL. The line goes suck like a vaccuum. Thanks for the input. Any other ideas?

[1stGenRocks]

its the air injection system. dunno if it will throw a cel or not. it is a good thing to have since it cuts back on emissions and raw gas coming out the tailpipe but its extra shit in the engine bay.

[david-b]

Im going to dissconnect the sensor today when I go out and see what happens. Im hoping I can take that out. I dont want to have to do custom work to the header to get it to fit in.

[1stGenRocks]

you should be able to weld a bung on the downpipe for it if you do need it. that would be better then f'ing up a brand new header

[david-b]

So Ive had the sensor discconncted for a week now and now cel. Car is still running great. I decided to take off the piping and sensor (up to the steel-colored piece) and still no problem. The car was significantly louder, but no cel or problems. When i install the exhuast this weekend, its staying off.