Originally Posted by madhatr02
Tuner would be my choice the other things may help but tuning the computer to run better will for sure help.
Nothing wrong with the K&N or S&B.
I have the Vararam and it works too.
CAI's are hard to tell any difference between.
To add to this, the Vararam has shown gains of MPG (especially on the highway) for many members here including myself.
I have seen an increase of 1-1.5MPG just on the freeway
As for gears, 4.56 would be too much for freeway driving and you will suffer MPG wise. I know as I ran it through winter. City driving is a different story.
Best gear option would be 4.10 if moving from 3.55
But if you have 3.92, that suffices and adding a tuner and other small bolt ons will better it for you