**UPDATE 6/1/2011** I recently spoke to a Trooper from a local barracks and he advised me that it is not so much as the fact of street racing (That does have some to do with it), but the fact that Maryland has adopted the California Vehicle Emissions Acts. This prohibits vehicle owners from altering their vehicle in such a manner as to produce an increase of air pollution. In order to be fully compliant with Maryland Vehicle emissions, you must utilize a CAI that is CARB compliant. I guess that they never drove behind a public transit bus,
I found this while looking for CARB Legal CAI systems for the 2010 Nissan Altima 2.5S. My primary concern was if it was legal in Maryland (Where I live). LEOs in MD will issue equipment violations for modifications that represent an idea that your vehicle is set up to street race. I do not need the hefty fines or points on my lic. I hope that this will help you in chossing a CAI for your vehicle.
K&N cold air intake (CAI) is high performance “street legal” designed with the best flowing and best filtering air intake system
For many car enthusiasts, speed is the real game and some can never get enough with the adrenaline rush. However, even some of the vehicles that is packed with so much power could still feel limited when the throttle response is not as much as expected. Though this is one of the easy things to resolve by obviously adding horsepower, however the problem is how to modify your vehicle for that boost yet still be able to drive it legally.
There are many areas that promote tightly regulated engine systems and this is the challenge for some products that provide your required engine boost. However, this is not the case for K&N Engineering’s Fuel Injection Performance Kit (FIPK) such as the K&N 57 Series Generation II FIPK Cold Air Intake System. This kit ensures that the engine performs better as cool air is directed to the engine which promotes better combustion. Plus it features a patented, low-restriction Filter charger that allows the engine to breathe more by inhaling a larger volume of air compared with other assembly.
K&N cold air intake
Advantage of the K&N cold air intake
The K&N 57 Series Generation II FIPK Cold Air Intake System uses only non-metallic rotationally molded tubes which essentially reduce the intake sound over the metal tube and decreases the air temperature as well, making it a better alternative over a replacement filter alone. In the usual set up, the culprit for the reduced natural horsepower is the air path leading to the engine as there could be a restriction between that and the air filter. The K and N cold air intake kit gets rid of the air path restriction through the replacement of both the air filter and the air path to the engine. In this sense, the aerodynamically engineered tube is capable of driving enormous amount of air to the engine which translates to better combustion and more power.
The K&N cold air intake system is truly guaranteed to provide increased acceleration and more horsepower. What’s more, it is specifically engineered for specific vehicle designs and absolutely easy to install and professionals could do it in about 90 minutes. If you choose to do it yourself, it comes with an instruction kit and installation could just be done in your driveways using simple tools and would take you about two hours.
The system is backed by a million mile limited warranty and would last up to 100,000 miles before service is required. And what’s great is that it is CARB exempt and is considered street legal in all 50 US states therefore providing the additional power from your engine but ensuring that your vehicle is still street legal.