Agent_zed
Established Member
sorry yeah getting my PCV mixed up. Modern deisels have cats to remove the soot.Actually, no... the purpose of EGR is to reduce the amount of oxygen in the mixture thereby lowering the combustion temperature and as a result producing less NOx. The soot and other particulates that are re-introduced as a by-product are undesirable as their abrasive nature can shorten engine life.
Either way if you remove the EGR valve and/or DPF you will most likely be breaking the law Modifying your vehicle’s emissions: the legal, safety and health implications and could be fined £1000. Along with that it would be likely that you would also find you are uninsured as your vehicle has been modified.
Does anyone really believe you will get 20% better fuel economy? The valve only works in very specific conditions so it would have to have an even greater negative effect to reduce overall efficiency by 20%.