what is the difference between an '03/'04 up-pipe for the egr cooler and the up-pipe for the 2005's. I've heard that the 03/04 do not have a scoop on them but the 05 ones do....can anybody confirm this?? can the 03/04 up-pipes bolt onto the 2005's?? I am asking because I want to block my egr cooler by welding the up-pipe shut (basically my own version of the sneaky pipe) and I figure an up-pipe from an 03 would be easier to mod if it doesn't have the scoop....
also, I am planning on using custom tunes that shut off the egr...but if I was to take the tuner off my truck therefore allowing the egr cooler to open again, will I throw a code??