will installing an aftermarket intake increase or decrease mpg?

 

yeah i'll post a question too, whats the diff. on long and short ram intakes???

which one makes more LOW end power/torque?!?!?!

 

They increase engine efficiency, therefore they increase mpg since it now requires fewer rpms to make the same power (albiet not much). However, as soon as your average driver puts any performance-increasing part into their car, they somehow gain 5-10lbs in their right foot, thus negating the fuel-efficiency increases.

 

And than when you add an exhaust to it afterwards! ooooo, man does it sound good! Check me out after you get your intake installed. :D

 

CAI - cold air intake - attempts to increase air flow and intake cooler (denser) air by relocating the intake position away from the engine.

SRI - short ram intake - attempts to increase air flow by getting rid of unnecessary bends and loops, but the intake area is usuall close to stock. More grrrrrowl sounding than CAI. It's usually easier to install too.

They generate between 2 and 6 HP. Usually it's across the whole power band with most of it on the top end. Increase MPG.
This subject has been beat to death so I'll say no more. Just get what you like and be happy.

 

but what intake will give me more low end power, don't really want upper power band stuff, if you know what i mean...

maybe i should install a stanly steamer engine in my Xa :D lol j/k i would never do that lol

 

They add a more power through out the rpm range. its the torque that gets you going so you would want something with more low end torque. Intakes usually add a little of both. If you need one I can get you a deal on either the injen or k&n. contact me if interested.

 

Actually adding a open type intake will typically reduce your mpg. The engine does become more efficient. However, the engine mixes air with fuel and then burns it. The more air you add to the mix the leaner the air/fuel mixture, this typically produces a more efficient burn, until a certain point. But the ECU has a preprogrammed fuel map it follows depending on what the sensors tell it. So when you add more air, the ECU will add more fuel to keep the mixture where it's been programmed to keep it.

Toyota engine's typically run rich, meaning a little heavier on the fuel, for reliability.

The real question is will the decrease offset the advantages that you get in return, and that's a bit more subjective because it's based on what you think is important.