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CAI vs. K&N vs. SRI

1806 Views 4 Replies 3 Participants Last post by  lizzurd
so i have been looking around the fourms but cant find a for sure answer for what i am looking for. i want to get better performance from the E with better gas milage. but im not going to race the thing. i live in a very hilly state and just to give it a little more umph when getting on and off the interstate. and there has to be others out there who want to know the difference between the three. any info or help would be greatly appericated
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CAI=cold air intake. The it's a longer variation of the SRI=short ram intake. The CAI usually has a filter that sits farther away from the engine so it can pull in cooler air=better engine efficiency=more horsepower.
K&N is a producer along with Injen, and AEM. Take your pick. They are all the same concept and you may only see half a horsepower difference between the three.
Be careful with the CAI, with it being closer to the ground, usually behind the front bumper, you risk hydrolock which can happen if the intake sucks in water. Hope that helps a little. I have an Injen and opted not to intall the CAI extension.
sorry i should have said the K&N drop in air filter. would there be any way to move where it gets the air from like behind the upper grill. some streets around my house have bad flooding problems so that may be out of the question if its sitting low
Unless something has changed recently you are limited to two choices on the 2007+ E's.

A K&N drop in filter or an Injen CAI due to the switch to a MAF on the 2007's.
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