> I didn't use a K&N filter, I used a different one, that came with the
>> intake. Same principle. Maybe it was a better filter.
>>
>> I know I managed to get >4 MPG more after I changed the filter. >>
>>
>>
>>
> I would argue you just weren`t checking it as close before the filter
> change, because unless you had a problem, on a FI eng that can`t happen.
> There is no scientific way that your milage could increase that much
> unless you had a previous problem. KB
Every car has a 'little black book'. Every fuel fill is recorded with the accompanying fuel economy. THe fuel economy went up and stayed up after adding the Cold Air intake...