Drop in mileage after installing AFE air filter???

I just installed a AFE ProDry s air filter in place of the factory air filter with about 20,000 miles on it. I have an UltraGuage and have been averaging about 23.5mpg. After installing the AFE my mileage dropped to about 21mpg. Is there a reprogramming time needed following the air filter change, or is it possible I did something wrong? I did notice that my idle smoothed out a little bit and my accelerator feels a little more responsive, but a little concerned if my mileage does not come back up.

 

you can always disconnect your battery for a few minutes. That will make your computer reset. Your gas mileage may not go up immediately, the computer has to readjust for the new filter.

 

If you swallow more air.. You must swallow more gas. Therefore mpg goes down. Drive like there's an egg under your accelerator.
FYI, be careful with afe filters. They work well on the street but for offroading I've noticed they let through a little too much debris. Both sides of the filter were brown last time my buddy washed his after offroading.

 

did you install a drop in filter or the whole intake.

 

I just did the staight drop in.

 

I'm guessing your driving habits have changes slightly then.

 

I installed a AFE filter at 15,000 miles and I have not seen any change in MPG according to my ScanGauge (or calculated) in the last 3,000 miles.

Yuma Taco,

 

^^ X2 for my buddy

I'm using the K&N filter with oil. Works great on and off the pavement. Just have to be careful not to use to much oil as it can go into your intake and make it grimy. Now I just apply a light layer to the outside and we'll see how that works out.

 

i havent notced a drop

 

Perhaps the 2.4L 5 lug tacomas mileage is more affected by the air filter in terms of gas mileage??

I've had an AFE for about a year in my 4WD 4.0L TRD and I haven't seen any changes in gas mileage.

 

After running it for a few days now the mileage is actually up about 1 mpg from where it was before. Apparentally it just needed some reprogramming time.

 

My guess is that you moderated your driving habits...

 

wowwwwww

 

updates?

 

I have had my AFE in now for over 6k miles and I have not seen any improvement in performance or MPG. But I have not seen any loss.

It has been easy to clean! So, I feel it has been worth the cost.

Yuma Taco,

 

I expected more mpg and no real difference in power with mine . What i got was more power and less mpg , nothing bad thoughas i see it.