Thread: EGR on or off after VS cam install

Im installing a VS cam, i wanna know if i should delete the EGR or keep it? The erg actually works(providing that it sends cooler air into the cumbustion chamber and helps with the emissions) but some people would differ with that statement.

My thing is i know about EGRs and camshafts but what i dont know is how these 3800s perform with a aftermarket cam and what they dont and do like. Some people say delete yhe EGR and some people have told me that it'll be fine if i kept it.

SO 3800 specialist, any suggestions???

You can keep it, if you want.

Removing it does clean up the intake alot and it cleans up the engine bay.

If you have a tuner you can tune it out and add 1-3* of timing back into the tables to gain what you will lose, back.

Originally Posted by Dee23

SO 3800 specialist, any suggestions???

Well..since you asked for my opinion Ok..I kid.

I'd keep it, unless there is a specific need to remove it. Like Matt mentions there are benefits from it and if you are in an emissions state, likely they'll be looking for it.

Agreed....

So, does the EGR actually pull timing? I figured it would help with timing or at least the KR since it is introducing cooler air into the combustion chamber and helping the fuel burn better.

I know our timing is automatically adjusted through the PCM ( as long as there isnt any knock it would advance as needed and retard as neccessary). Getting a dyno Tune(preferably) would set and dial everything in more precisely and the timing would have a set degrees to refer to.

So if the EGR helps in so many ways, shouldnt the timing already be provided from the benefits of the EGR rather than having to add it?

Yeah, enertia. Thanx for the responses.

I just dont understand why people delete the EGR. I would rather have better performance with having to clean the upper intake periodically opposed to not having complete combustion which means not reaching optimum performance, hotter chamber temps, resulting in KR and more pollutant emissions.

Ima keep the EGR, think the car will like that a lil better....

Thanx, yal...

For what its worth, I deleted the EGR on my Stealth and I was getting 25-26 mpg daily driving it (factory rated at 19/24). Granted there were other flow mods (intake, downpipe, test pipe, etc), but my point is, if it helps fuel mileage, the help is negligable.

I look at it as its pumping dirty exhaust back into the engine. Imagine eating your own crap.

Plus remove = weight reduction racekar status. Then again I deleted mine so I wouldn't have to constantly clean the TB and one less thing in the engine bay

Agreed, I never liked the thought of dirty exhaust being routed back into my intake either.

Newer cars are built to run without the EGRs, so they were tuned for no need of it. Plus most newer cars being direct injected, the fuel burns much more efficient and cleaner from those high compression rates.

It's a win-loose situation.....I guess u go the route your TUNE likes best