Quote:
Originally Posted by wagonman76
They (air filters) are also more restrictive when dirty, hurting mpg.
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I disagree; that was true with carburetors, but with FI (any type I can think of) it should just cause you to run the throttle plate a little more open.
Here is the air filter minder (brand) I run in the TDI
Filter Minder, Automobile Parts, Air Filter, Fuel Monitor, Car Accessories, Engineered Products I got it because they were common on 7.3 PSD's when I toyed with them.