Mercedes EGR

[CarTuning]

How are things going with EGR removal, is deprogramming enough or do I need to completely close the channel as in the photo? Thank you.

 

[Mersovod]

It's better to close it, it's easier and more reliable. The tube may burn out, the valve will be more difficult to remove, and you should not think that the valve may leak. But to check it is enough to flash the calibrated firmware.