The first step in increasing the performance of your Scion xB is with the use of as low restriction intake system. The most gains for a bolt on, in general, will be found with this one modification. As far as choosing an intake, the best system will pull air in as far way from the motor as possible. These are cold air intake/cool air intake. The cooler the air, the higher the oxygen content, the greater the bang. The difference between cold air intake and short ram intake is minimal, but it is there.
- Generally a short ram intake will give you low end (off the line) horse power/torque, where a cold air intake will give your Scion power in the upper part of the horse power/torque curve.
Depends on where you want the power to be. The inherent fault with a short ram intake, it pulls in warm engine air. Inherent fault with a cold air intake, it can pull in water via a puddle. Destroying your engine, creating a hydro lock, and causing severe internal damage. They do produce water bypass valves to counter act this, but they are not 100% safe. Thankfully, in the Scion, you would basically have to drive into a lake to get the water up high enough to reach the filter. On the positive side, short rams will launch you off the line, and cold airs will give you another 1-3 horsepower overall. The alternative that is knocking on the door just behind these mods, as far as horsepower, is the K&N drop in filter. This filter increases CFM's into your motor, adding power, but you are still routing through a restrictive system. Still, another highly recommended mod. The Scion benefit greatly from a larger supply of air.
Thanks to the after market support of Injen, Fujita, Perrin, Bomz, Tenzo, and countless others, you can easily find a setup to both fit your needs and style.
Start your search here: Scion xB Intake
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