i replaced the egr with a delco and i still everyonce and a while throw this code at least 3 times since i changed the egr valve which was like 3 weeks ago.what gives

 

come on guys this is really annoying

 

Could be the EGR solenoid as well.

Just a thought

 

where is that and what is that

 

It isn't necessary your EGR its just insufficient flow through the EGR ie. no back pressure. Did you gut your cats? Or drive with your cut out open? This would be the cause of this. The only way to get rid of it is to either clear the code with a scanner, only a temporary fix; or get it programmed out, permanet fix. I reccomend programming out the A.I.R. system at the same time for a clean look.

Travis

 

You also have headers which could be contributing to the problem. Some people have found some success by using the M6 EGR valve instead of the A4.

 

It is most likely from a lack of backpressure from the headers and especially from the cutout if you run with it open all the time. I had a brand new EGR valve in my car right before installing SLP single cat headers and I got the same code off and on afterward. I adjusted the back pressure with the Borla plates, if I used the smaller plates the code would stay off, then with the larger opening plates it would come back. I finally removed the EGR and had it programmed out, I was tired of dealing with it

 

i have slp headers and no cats run through a cutout so just dont worry about it until i get progaming theres no performance loss is there?

 

There is no performance loss at WOT by removing it, but part throttle cruising can be affected.

By recirculating the exhaust gasses into the combustion chamber, the exhaust gas temperature drops because the gasses displace some of the air that would normally be there. These reduced temperatures allow the PCM to advance timing further during part throttle driving due to a reduced risk of pinging.

Basically the EGR system, when properly functioning, improves part throttle cruising performance. But it has no effect at WOT.

I'm simplifying it as best I can here to keep from writing a book, but if you do a search for EGR on here, you'll find this same information posted on here and on other boards.