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OK, I'll buy the "insurance" concept ... I was simply asking if anyone had any data to substantiate anything more than a sub percent marginal effectiveness increase ...
While I haven't done any research on aftermarket air filter systems, I have heard Pat Goss of Goss' Garage (syndicated radio talk show) note repeatedly that improved flow filters offer a very slight improvement (assuming all else is constant) ONLY at full throttle positions - he contends that the DO NOTHING at any other throttle position. Claims he has tested the ones that the manufacturers would provide to him.
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George Stephenson
1991 350 SDL (200K and she ain't bent, yet)
former 2002 E320 4Matic Wagon - good car
former 1985 300 CD - great car
former 1981 300 TD - good car
former 1972 280 SEL - not so good car
a couple of those diesel Rabbits ...40-45 mpg
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