I am wondering if i can delete the egr on my truck. It is a 97 250 with a 460. I just put headers on it and am wondering if i can just plug it. Will this hurt feul economy or make it run bad? Also if i run true duels can i put the O2 sensor in just one of the pipes or will i have to run an H pipe and put it in that?

 

I think Conanski did a true duel system on his truck, or at least one of his trucks, and only put the O2 sensor in one pipe. As for the EGR, yes you can just block the intake port of of the EGR as long as it is the old style EGR, meaning it isnt a flow based EGR (DPFE) but the EVP sensor style (sensor on top of the EGR valve). Eliminating the flow sensor style will throw a code that may or may not light the CEL.

Why eliminate the EGR? The seat of your pants will not notice it missing or working, and when you are cruising at highway speeds it can help reduce fuel useage (a small amount on a 460). It is a far better system than the old style carbed EGRs because the computer continuously adjust to the correct air to fuel ratio via O2 sensor, MAP, and other sensors.

 

Thats kind of what i wanted to know. I just put l&l headers on and when i took off the manifolds i didn't investigate enough and accidently cut the egr thinking it was a air injection line. I got a little sawsall happy. lol. I blocked it off for now but all i need is that tube to rehook it. I guess ill have to get another one. And can anyone show me how they did true duels. Im thinking right now i will have to bring it back to the other side to go through the cross member unless i see something better. It was running pretty good without the egr and O2 sensor hooked. it had a little sputtering at cruising speed but it could be the egr trying to kick on and the O2 sensor unhooked can't help.