Will an intake + exhaust increase or decrease gas mileage?

[theonlynameleft]

Just wondering, I would love to get the aFe (or injen) intake + magnaflow cat back exhaust and was wondering if it will (with normal driving) increase or decrease the gas mileage that I get now (which is not that good compared to other more gas economic vehicles but I don't care).

Thanks guys
(i get about 380-400kms per tank, very minimal highway driving).

[Greenkirby21]

increased, at least for me. I have injen intake and magnaflow. I even drive with a worse foot. I use to get 19 mpg, and now I get 22.5. I take the same path everyday.

[theonlynameleft]

So you got better gas mileage? That's pretty good, all you did was the intake and the cat back?

Thanks a lot.

I'm just trying to decide which intake I want, the BMW performance one is too much, may get the aFe

What should I get the oiled or dry one? What's the difference. I drive in a regular area, average pollen amount not too much dust around or anything.

[Riley1524]

Originally Posted by theonlynameleft

So you got better gas mileage? That's pretty good, all you did was the intake and the cat back?

Thanks a lot.

I'm just trying to decide which intake I want, the BMW performance one is too much, may get the aFe

What should I get the oiled or dry one? What's the difference. I drive in a regular area, average pollen amount not too much dust around or anything.

My MPG increased with the AFE stage 2 intake ( which is for sale in the FS section ) I saved even more gas when i had the BMS powerbox paired with the intake.