I have removed mine on my '83 300D, but have not cleaned the IM. How much of an improvement would this afford me, better performance, improved MPG ?

I recently removed the IM on the "99 E300D and I was shocked at the built up crud.

Gary

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Gary
Experience is something you get, Just after you needed it....
'99 E300 295K, '83 300D 220K, '75 240D 185K sold
'80 MCI Bus Conv DD 6V92TA, w/4 cyl. Kubota diesel GenSet 12.5KW