My xb is completely stock but i would like to increase mileage and was wondering which air intake would be best and if this is a good start on modifications. I appreciate any input
thanks

 

I like my AEM... Any of them (by themselves) are only going to increase mileage a little. For most increase in performance, it's a cumulitive(sp?) effect of adding say an intake, header and exhaust and decreasing weight where you can. But, your getting pretty good gas mileage as it is with a Scion.