Air filter
Safety Car
Joined: Oct 2007
Posts: 4,222
Likes: 1,077
From: South Florida
If the goal is optimizing we put a $5 (any) 1-bar map sensor behind the air filter and log the voltage at WOT with a multi meter.
Coincidentally this is a simple method to measure crankcase pressure thus ensuring the crankcase is under a vaccum at WOT after you've adjusted the air filter situation or in proximal tuning methodology for any vehicle where the filter or engine is no longer factory.
And this simple test must be done as part of any solid engine tuning routine no matter what type of engine when there are modifications which influence volumetric flow rate of the powerplant or intake system. It is affordable, cost is negligible, and the results are absolutely valuable beyond almost any other diagnostic you may perform related blow-by gas, air consumption, to power and cleanliness of the oil system and thus engine reliability and long term health.
Coincidentally this is a simple method to measure crankcase pressure thus ensuring the crankcase is under a vaccum at WOT after you've adjusted the air filter situation or in proximal tuning methodology for any vehicle where the filter or engine is no longer factory.
And this simple test must be done as part of any solid engine tuning routine no matter what type of engine when there are modifications which influence volumetric flow rate of the powerplant or intake system. It is affordable, cost is negligible, and the results are absolutely valuable beyond almost any other diagnostic you may perform related blow-by gas, air consumption, to power and cleanliness of the oil system and thus engine reliability and long term health.
Racer
Joined: Mar 2014
Posts: 262
Likes: 223
From: Huntsville, Alabama
I have seen a YouTube video where Paragon does a controlled shootout with the air filters they sell and another video of a controlled shootout of the CAIs they sell. It's the best Apples to apples comparison I've seen, and they present it in an unbiased fashion.
Last edited by Gunny27; Jan 17, 2023 at 08:33 AM.
Safety Car
Joined: Jul 2019
Posts: 4,079
Likes: 2,414
From: Florida
Here is one I've done for performance. I did a different one for filtering....
Race Director
Joined: Feb 2004
Posts: 11,039
Likes: 2,591
From: Del Boca Vista FL
Had dealership replace with OEM air filter at about 8,200 miles. Had been road tripping across country including driving on graded, cut dirt roads in Utah and filter was very dirty. There was debris in the filter pleats as well as debris in the filter housing.
