My mechanic thinks that my Pacesetter 4-1 header is causing my egr to act up. He thinks that the little tube that comes off the #4 primary isn't allowing enough flow to the egr, causing me to fail smog. I do not remember how the egr received it's flow from the stock header. Did it only come from the #4 primary on the stock header or is it a log style header? I completely forgot what it looks like, lol.