the one i had under the hood has a bolt on place for the egr and the for tubes aswell as the 5th one that runs for the egr wich is kinda molded into the one that goes to the 4th chamber and the one i was trying to install doesn't any of those traits

what exactly is the egr for emission's? and what about the vaccum switch valve that sits on the IM cover?

PLEASE!!! any help would be greatly appreciated...


wess-

also the IM that was already installed had bigger and more curved tubing and on the back had 7afe 3 wrote on it and the one i was trying to install has the number 1 and straighter slightly smaller tubing