| The LLY and LBZ have the egr stuff on them. They make a little plate that can be put in to block the flow of the exhaust gases in to the motor. Its really cheap and a good investment if you end up with one of those style motors. If you don't block it, its likley you won't notice anything different than if you did, but people say that their oil stays cleaner from the lack of soot recirculating in the motor. Also its good piece of mind if you were to block it. |