Question to the floor;

 

If an engine has the EGR remapped out, does the EGR need to have the metal blanks to stop any gasses getting to the intake in place?

 

How reliable is the claim that the EGR will be 100% closed?

Whether it has been mapped out or disabled by an Emulator/Simulator if the EGR valve is not 100% closed it will continue to pass gases, if you want to be 100% sure then fit the blanking plate.

 

I didn't because I wanted to remove the emulator from the circuit (unplugging the leads & reconnecting the loom ones) if I had any doubt about its operation or for fault finding by elimination.

Thanks, so if the ECU is expecting the EGR to be closed I'm guessing any gasses entering the intake would mess up the fuelling ?