Nice Job! Two questions:
1. Does the om606 non-turbo use the same "long" gloplugs the 98-99 Turbodiesels use? Are they prone to breaking on removal like the 98-99's?
2. I take it the reason you attach a small filter to the EGR inlet instead of plugging it is so it can continue to function without it knowing it is only flowing clean air and not exhaust? Is that why it doesn't trigger a CEL? If so couldn't you attach a length of black 3/4" heater hose to the EGR inlet and route the hose to the post-filter section of the airbox/filter housing? I only mention this as the little filter definitely looks "aftermarket" where another black hose running to the airbox may look much less innocuous and more stock to the untrained eye?
Just a thought.
RT

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