Bob said:It's hard to say if anything bad will happen or not. The fuel maps are calibrated assuming a functioning EGR. OTOH, many guys are running around with blocked off EGR.
I seem to recall stories of a few engine failures attributed to disc. EGR back in the day, but who knows what really caused the problems. You might want to post this question on the mkiv.com list, I'm sure many will respond.
I thought the main point of the EGR mod was to lower the temps in the back cylinders (where the EGR system sits). Now that doesn't seem to make sense that with the EGR system in place it would lower engine temps by placing HOT exhaust gasses back into the cylinder.G said:To reduce smog the EGR takes some of the exhaust gasses and put its back into the intake manifold. therefore lowering engine temps and reducing NOx gases