Acura TL AEM Cold-Air Intake systems are an inexpensive and easy-to-install performance upgrade. These Acura TL AEM Custom Cold-air intake provides a noticeable horsepower increase without breaking the bank. There is also the matter of easy installation. Most people with even a hint of a do-it-yourself, can install a Cold-Air intake installation in  about 2 hours. These Cold-Air Intake systems relocates the filter outside of the engine compartment to deliver the coolest air inlet temperatures possible. Cooler air is more dense, which translates into more air per volume for the explosion in the combustion chamber to create more horse power and torque. Most cold-air intake systems come in four main pieces. There are two mandrel-bent aluminum pipings, one billet-aluminum MAF adaptor and one high-flow filter. Par for the course results tend to add from 3 to 5 horsepower.The frequency of the sound wave generated by the Acura TL cold-air intake system varies with it's length, longer systems tend to generate lower frequency waves. With a traditional cold-air intake, as the RPM increases, inlet valve opening increases while the inlet tract length remains constant. Over a period of time, the increasing frequency of the cold-air inlet valve and the cold-air inlet system resonance become out of phase with each other and the effect of using sound pressure to promote cylinder filling declines.

Yet another aftermarket air-intake choice is the Acura TL AEM Short ram intake system. Essentially a simpler version of the cold-air intake, a short ram intake relies heavily on engine placement for cooler air. And while not as technically advanced, sources say in certain applications the short rams work better than a intake. The following commentary comes from the moderator of a popular tuner message board when asked about cold-air intake versus a short ram intake "The trouble with short rams is that, while they have less restriction due to their short length, they often wind up sucking hot air once the engine warms up, robbing you of  horsepower. The sound is likely to be virtually identical as it's mostly caused by having a cone filter instead of a silenced air box."and come with a limited lifetime warranty.

• Cold-Air Intake systems are an in-expensive and easy-to-install.
• Cold-Air Intake provides a noticeable horsepower increase.
• Can install a Cold-Air intake installation in  about 2 hours.
• Cold-Air Intake systems relocates the filter outside .  
• These Cold-air intake adds from 3 to 5 horsepower.