You won't get emissions testing problems. EGR reduces NOx which is not measured in the MOT smoke opacity test.

Like all emissions controls, no discernible bnefit is felt by the driver so there is always an urge to remove it. However, under high load demand, EGR is switched switched off so it doesn't affect available power. There can be a small benefit in economy by deleting it.

Modern ECUs will detect that airflow passed the MAF is higher than expected and will probably trigger an MIL.

Low compression diesels really need uncooled EGR to idle properly when cold.

Edited by unthrottled on 15/07/2012 at 21:26