New Air Filter Tester... Who Inwards Their Correct Heed Would Postulate Such A Matter To Rank Them A Filter Is Then Dingy It Needs To Last Replaced?

I wonder how dingy ane could instruct without adversely affecting the engine performance?

Well, I can't discovery the regime annotation that soul sent me amongst the answer... as well as that bugs me, only they sent me a link to a PDF well-nigh testing airfilters scientifically http://www.fueleconomy.gov/feg/pdfs/Air_Filter_Effects_02_26_2009.pdf  which proved that fuel economic scheme inward novel cars isn't affected yesteryear clogged filters. Old pre reckoner cars, they can't bargain amongst clogged filters though

The finish of this written report was to explore the effects of a clogged air filter on the fuel economic scheme of vehicles operating over prescribed exam cycles. Three newer vehicles (a 2007 Buick Lucerne, a 2006 Dodge Charger, as well as a 2003 Toyota Camry) as well as an older carbureted vehicle were tested. 

Results present that clogging the air filter has no pregnant lawsuit on the fuel economic scheme of the newer vehicles (all fuel injected amongst closed-loop command as well as ane equipped amongst MDS). 

The engine command systems were able to hold the desired AFR regardless of intake restrictions, as well as thence fuel consumption was non increased.

 The carbureted engine did present a decrease inward fuel economic scheme amongst increasing restriction. However, the degree of restriction required to campaign a substantial (10–15%) decrease inward fuel economic scheme (such every bit that cited inward the literature3,4 ) was as well as then severe that the vehicle was almost undrivable. Acceleration functioning on all vehicles was improved amongst a construct clean air filter. 

I every bit good wonder, if whatsoever junkyards always went through the airfilters inward the cars getting towed inward as well as parted out, as well as looked for new, or actually useful, parts similar air filters that they could sell inward mass to places similar used motorcar lots, demolition derbys, or something

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