Question about air cleaner
 

Just wondering if anyone has done any testing with and without an air cleaner and how it effects ET
Also any testing between paper and k&n fliters.
I have never run an air filter but i am thinking about running one just wondering how it would effect ET and wondering if the K&N fliter and the xtreme top if worth the money.

Re: Question about air cleaner
 

The only way you will know is by testing. Performance is depedant on the calibration of your carburetor. I have seen cars go faster with the air cleaner installed...and other slow down. A maintained K&N filter is superior than paper due to the fact it also prevents dust and FOD of getting inside your engine, especially the cylinder walls. However, the K&N also can be more restrictive than some paper filters.

Re: Question about air cleaner
 

Agree w/ SSDiv6. I can tell you my Stocker ram-air '70 AMX did not slow at all with a 12" K&N with matching filter-charger top piece. I always ran it. There is a lot of dust in the air here in AZ and it's not worth paying for new cylinder walls, pistons, etc., for even a few hundreths in my opinion. Now that I run SS, I have a hi-rise intake and a filter is no longer an option. Wish it were...

Re: Question about air cleaner
 

on my Cutlass I run a Moroso 14" paper air cleaner...@ the fall classic last year I went a 12.84 with it & a 12.76 without...passes were made within a 1/2 hour of each other.

Re: Question about air cleaner
 

The design of the air cleaner has a lot to do with performance. It is a known fact that the drop bases kill performance; however, due to clearance problems, many times your only choice is to run a dropped air cleaner base. Also, the K&N X-treme lid is way over rated and many engines loose power with the liod due to disruption of air flow affecting the metering system.

Re: Question about air cleaner
 

This was found on DRR from April 7th 2008

I know that a standard 14x3" paper filter slowed my mild (low 12-sec, 850 CFM) BBC door car slightly, (.03-.04), vs no filter.

Tested a 4" tall K&N, with no added oil other than what it came with, and no change vs not having a filter. Oiled it thoroughly, and it did slow .015.

Tried a Wix P/N 42096 14x4" paper element, which fits all standard (& "cheapie") chrome air cleaners, and it ran just like no filter. I've been using them for the past 9 years.

Napa has a nearly identical one, (P/N 22096), for about half price, but tighter pleating, have not tested it in controlled manner, but did run one in a pinch.

Re: Question about air cleaner
 

Your results are consistant with other testing that has taken place at the lab. Others have found that the Wix paper element is very good when compared to the K&N filter. Like I said before, there are many tests that have found that the drop-down air cleaner base and the K&N X-treme lid is not effective either.

Re: Question about air cleaner
 

The flow rating for the Wix filter 42096R 14x4" paper element is 600 CFM.

Wix filter 46944R which flows 1000cfm is virtually the same as 42096. They are both 14X4 paper filters

The two other differences are cost and filter thickness

46944R costs $28 and is 1.25 inches thick 1000CFM
42096R costs $13 and is 2.25 inches thick. I guess the thickness accounts for the flow rating