Stick With Afm Or Tune It Out?

[PFF09Sierra]

Hello All,

About to make an appointment with Justin at BlackBear and had one question. I plan on doing a CAI (dont know which brand yet) and probably a Corsa exhaust or a Extreme Cherry Bomb before the tune. Im not too worried about the drone but Ive heard the Corsa's arent that loud and kinda want something a little louder. Just wondering how much difference the AFM really makes on the the MPG. I like the fact that I get better MPG and actually play the game of how long can a keep in in 4 mode sometimes but is it really worth it? Are there any other advantages of having it?

 

Thanks for the help!!

[Stevens03]

Corsa Sport is plenty loud,... just not loud in the cab.

[BigBlueLB756]

If you're doing an exhaust of any kind, I say do away with AFM. Your ears will thank you for not having to listen to that "tractor" sound that 4-cylinder operation produces.

[butzers09silverado]

I have no muffler on my truck and you get used to the subaru sound... i don't have full dic so now i definitely know when i'm in 4 mode... i can make a youtube video of it this week if you want so you can hear it.