So I have the 85 Cali air cleaner on my 84 300sd engine and was wondering if its giving me more air than a cold air in take system would? It's way bigger than any Spector air filter I can get my hands on at work. What you guys think?

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84 300sd 2.47 dif 360k
26 mpg needs lots of love
given to me in pitty

89 civic hatchback auto 140k
33mpgs soon to be low to mid 40's
been in the family since mile 1

85 300d with unknown knock. driven over 30k with knock and still going. sold for $800