Drinking too much
beer in Munich ;)
Join Date: Feb 2012
Location: I would rather not say
I'm not trying to stir anything up, but I've heard of people going for a remap, getting the EGR deleted in software and then a few months later finding they have sticky swirl valves (usually caused by exhaust fumes sooting them up) - the people which did the remap than suggested they brought the car back and they woudld check the EGR was closed mechanically. it doesn't seem to be normal practice to check that the EGR is closed when it is deleted on a remap.
The reason I mention that, is because the performance symptom of the engine being a bit gutless at lower revs is exactly what i had, and it was as a result of swirl valves being stuck a little bit open at lower revs when they should be fully closed. I used intake cleaner and got them functioning again, and was pleased with the improvement of instant torque at low revs with just small amounts of throttle input
If yoiur EGR really isn't operating then there shouldn't be anything sticking the swirl valves, assuming they were bright and clean in the first place, but were they ? And is the EGR closed properly ?