Grandpa5x

[grandpa5x]

I understand the benefits of hi-performance washable air filters, my question is are they beneficial at lower every day driving RPM. My daily driver is a '97 Mazda SE B2300 5 Spd std rear end with a hard tonneau cover. I drive 88 miles/day in 2 round trips to the school bus lot on county roads with 35-45 mph spd limits. I rarely ever get above 2000 rpm, I am getting 28.6-30.2 mpg depending on A/C running or not, as with every thing else in life what we have is never enough, so my question is would I see a roi buying a hi-performance filter in improved mpg. Thanks

 

[Road Angels]

Save your money buy a good quality paper unit, and keep it changed for slow driving and dirty roads, and there not worth the trouble to keep them clean, having to wash and re-oil, now if your building a HP engine then thats different, and always double check that the seal is in its groove and sealed good before you snap the clips down

 

[Mikel89us]

A $50 k&n, and a $10 cleaner kit will last you longer than the truck. Clean it twice a year, and when you run out of cleaner you can use dawn dish soap and water. They do help in all rpm ranges, but there isn't enough to notice a gain
you might get a measurable mpg gain though.

 

[YungICY]

I would get one. You may have to clean it a little more often then twice a year depending on your driving conditions. (mines in need of cleaning once a month. But I play in the dirt alot. Like a lot a lot). And I agree with mike. It will help you motor and power but not enough for you to noticing anything. But I think you'll see a few mpg increase as long as you're not pedal mashing on the gas.


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[tomw]

If you install a K&N filter, you should know that you have increased the risk of letting dirt into the intake if you under-oil the element, or getting the MAF wire(s) coated with schmutz if you over-oil.
I don't see any HP benefit as the O2 sensors won't put in too much fuel if the airflow is diminished, but will put out a bit less hp. It will do the same with the K&N if it is too dirty and restricts airflow.

Fifty bucks buys a lot of air filter elements.
tom

 

[grandpa5x]

That was basically what I thought. As I said in my post I understand the benefit of low restriction filters if your toes are in the intake manifold most of the time. No mfg. lists air flow numbers in normal driving so I thought a std. paper filter would provide all the air your eng. needs during normal driving. Several yrs. ago I had a '93 GMC C3500 used to tow a 5th wheel camper, soon after buying it I installed a "hi-performance" turbo muffler, I never noticed any gain in performance either power or mpg in normal driving. Later after selling the camper, muffler rusting out, and needing to sell the truck I installed a std. muffler from Autozone for $26.97 and immediately noticed improved power and 1.2 mpg in everyday driving. So everything told about increased performance across the board is not true. Thank you for your replies.