https://www.evolutionm.net/forums/no...refer-mac.html

This thread has some good info on what we went through in MA. Maybe they eased up a bit since. We where all heavily modded on EDM V7 in 2011-12 when suddenly that happened... and we pretty much all got to know the MAC folks.

 

Isnt the EGR something that is looked for thought the obd-2 port during the inspection? I know for my car i have the force inspection path for the rear o2 sensor for my car and have had no issues with MAC. But im not sure how it works with the EGR and the sensor for inspections.

 

He is sort of right in that if you have the periphery bits set "correctly" it should pass the regular test OBD2 at a service station. However we all went from passing (forced) to "randomly selected" for MAC evaluation and once there, they will actually log EGR duty cycle. I'm guessing he probably didn't have a modified 8-9 in 2011 or got just lucky as we didn't even know what to look out for.

 

FWIW I was referred over the the MAC center a couple years ago and it wasnt due to the force pass but rather that they were keeping logs of what ROM ID I had and it had changed through the years.

 

Order placed. Looking forward to ditching the EGR.

 

Perhaps this was already covered, but if I have already removed the EGR system, would this sometimes cause a burning oil smell from my exhaust? Or occasionally burning oil?

 

Not that I have encountered. I would start looking for oil leaks.

 

is the cel it would throw purely emissions related? looking to do this but don't have a way to turn off the cel. Would leaving the cel on untill i can turn it off affect performance or results?

 

The CEL will be for insufficient EGR flow. It shouldnt affect performance if the car is tuned right to start with. Been a long time since I tried it though so I cant say 100%.

 

Gotcha thanks, anyone possibly chime in that has done this without being able to turn off cel?

 

didnt know it made that much of a difference egr delete it is

 

If you cant retune the car or it wasnt taken care of originally in your tune, it will throw a CEL.

 

My first EGR block off plate was an aluminum can trimmed to act as a gasket (GHETTO). I finally just welded the EGR ports on the manifold when it was off the car. 25 bucks to not deal with the BS is worth it to me .

 

A reason we thought of recently to consider an EGR delete stems from design of flow for the system. All of the exhaust flows right at the idle motor. Much like the DSMs that are known for killing idle motors, the Evos are starting to do it as well. This is in part because the EGR is pointed right at it. It also puts a lot of carbon in the throttle body and can cause sticking issues.

 

I just picked up a ported intake mani and it came with an EGR block off plate since I'm on SD will I need to update or retune anything on my ECU?