No adhesives, binders, or silicone are used in the manufacturing process. The blown microfiber (BMF) media provides high particle reduction efficiency and a broad chemical compatibility.
High airflow filters series#
They also help prevent premature blinding of the filter’s outer surface, promoting fuller utilisation of the media for an optimal combination of particle removal efficiency and contaminant holding capability.Įach grade of the 3M™ High Flow Series Filters systems is manufactured in polypropylene material.
Highest flow rate among 3M large format filters allows for operational flexibility to maintain process flow requirements.Proprietary diamond pleat design optimizes usable surface area of the cartridge to maximize filter life.Similar flow, similar filtration but does not last as long as the AC Delco. The second place filter was the Baldwin filter. It was far superior to the performance air filters and standard replacement air filters in all aspects. Conclusion – Best Engine Air Filterįrom the results on this specific test, the AC Delco standard replacement was the best aftermarket air filter. Out of the two performance air filters, I think the AFE filter is the one to go for, much better filtration and lasts longer before becoming a restriction vs the K&N filter. In second place we give it to the Baldwin engine air filter. It filtered out more dirt, it last the longest before it became blocked and it flowed as much air as the other filters in the test when new. The AC Delco replacement air filter was by far the superior air filter in this test. Taking into consideration dirt let through and time to blockage the Baldwin filter came in second followed by the unbranded filter. Third place was the UNI filter but the UNI filter also let the most dirt through, almost twenty times as much as the AC Delco filter. However the WIX filter let around 10 times as much dirt through as the AC Delco filter. The WIX filter came in second place taking 48 minutes before it reached the restriction threshold. This was 27% longer than the second place filter. The AC Delco filter was again the best air filter in the test taking 60 minutes before it reached the restriction threshold. The paper filters flow more air for longer than the performance air filters. In general the OEM replacement type engine air filters were less restrictive than the performance filters. Which filter lasted the longest before becoming a restriction?
The Baldwin filter was second letting 1.1 grams through and in third place was the AFE performance air filter which let 1.8 grams through. The best engine air filter was from AC Delco which only allowed only 0.4 grams of dirt through. – The UNI and K&N filters were the worst performers, letting around 40% more dirt through than the other filters in the test. In other words, changing to a performance air filter will probably make no difference to power (on a stock engine) (350CFM is equivalent to around 500hp)Īt 250bhp/173CFM the difference between the best and the worst filter was only 0.3PSI. The difference between the best and worst flowing filter, at 350CFM, was only 0.8 PSI. Which filter flowed the most air when new?
High airflow filters pro#
The performance engine air filters were the AFE Pro Guard 7 and a K&N panel filter. The OEM paper air filters were from AC Delco, Baldwin, one unbranded filter, WIX, Purolator, Amsoil and UNI. Seven OEM-type paper air filters were compared against two performance air filters. The engine air filters were compared for airflow when new, for filtration quality and for dust capacity ie how quickly they got blocked. The tests were carried out in laboratory conditions to find out which was the best engine air filter. Nine air filters for the same Duramax engine were used. Video can’t be loaded because JavaScript is disabled: Best Engine Air Filter? – OEM vs Performance ()
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