invest in a K&N air filter
 

Based on my calculations, my '05 4 cyl altima got 8% better fuel economy after putting it in.

thesheet

Highly unlikely. There are other factors that are always in play, that are seldom accounted for. The throttle plate is the point of largest restriction in flow.

Can we see your calculations? What was the before and after testing??

I should have tested mine ABA before I threw away the paper filter. I grabbed a K&N for the savings, not the claimed mileage or hp increase. I already own it, so I am keeping it, but I probably would have passed on it if I know what I know now.

This can go straight to the unicorn corral.

Should be "fullofsheet". :rolleyes:

Are the folks at K&N so desperate they resort to spamming forums? I guess these are the tasks they assign to the marketing interns.

8%? Imagine the ROI on that. :eek:

Maybe he drove the car 20k miles down a dirt road with the OE filter, drafting someone.:p

regards
Mech

I had an -10% change in mileage today, had to drive home in a 25 MPH headwind.

regards
Mech

the-bull-sheet