Nice. I gotta do some searching on EMS.
In the meantime, what is the ill effect on bypassing this besides the CEL light?

 

If you don't have a clue what anything is or does on you're car the smartest and least expensive thing to do is keep you're hands off of it. You'll save a ton of money. If you're really inquisitive and want to "learn" something, as opposed to people "telling" you, get a copy of the factory manual, start at the beginning, and read. At least you'll have something of an idea of systems and component location.

 

I hate reading. That's what I do for a living and I don't bring work home.

To act as a guinee pig I went ahead and bypassed it. Took the car to work as usual. Everything feels the same. The power is there. No CEL. Nothing unusual. 52 miles later, everything still seems okay. What I'm thinking is miles per gallon will suffer but I won't know that until a couple of fill up. We'll see.

Real word results beats reading the manual.

 

It's not a EGR valve. It works nothing like an EGR valve. It's not even related to a EGR valve.

EGR= Exhaust gas that in recirculated back into the intake manifold.

It is a Air control valve that puts fresh air into the Exhaust ports at cold start. The sole purpose is to warm the catalytic convertor up quickly.

The Monitor the PCM runs to verify air pump function and flow is too complicated to try and bypass or build a simulator for.

If you remove it on a Stock PCM equipped car you will have a CEL on. It's not a "you may" situation, you WILL have a CEL.

Drive by wire cars do not have this system.

 

Isn't it sort of useless of you have a testpipe?

 

Thanks for clarifying the EGR vs Air bypass question slows2k

 

Hmmmm, there are three parts to that system: the ACV that you are looking at, the control valve on your airbox and the air pump which is below the front headlight.

If you reroute the vacuum line directly to you manifold you are bypassing the control valve. It means you ACV ( and hence your exhaust manifold) will be open to your air pump whenever you go into vacuum. This is not recommended.

Firstly there will be times when your air pump is running but the ACV is closed, so it will be put under undue strain. I expect it will eventually burn out and fail.

Secondly, at idle exhaust fume will have a direct path back through the ACV to the mild rubber hose that runs under your intake manifold to the front of your car. I doubt this can lead to any good.