Rep Power: 287

whats the difference btwn a regular Injen CAI and a RD CAI from Injen? its a 100 bux difference so i wanna know before i order it... and btw, its for a AUTO

 
Rep Power: 359

RD Series Race Division Intake Systems

The RD series is a cold air intake system for the enthusiast craving mid-range power. The intake tube is strategically placed behind the front bumper to acquire colder, denser air. Although most of the RD series is a one-piece design, several are two-piece designs due to the mass air flow meters. Every RD system is certified or pending by the California Air Resource Board and backed by Injen Technology's limited lifetime warranty.

IS Intake Systems

The IS Series is a traditional, underhood intake system that is placed in the stock location of the factory air-box system. Each system is built from 6061, T-6 aluminum alloy to ensure the lightest design possible. Every IS system is certified or pending by the California Air Resource Board and backed by Injen Technology’s limited lifetime warranty.

 
Rep Power: 359

The RD is a CAI, and this is why it cost more
and the IS is a short ram

Here is the IS



Here is the RD