Ok im gonna rant and rave about throttle body spacers for a minute. Im not completely against them, but then again, you are not going to see a super awesome increase. Especially on a fuel injected vehicle. Back in the day throttle body spacers were utilized on carbeurated vehicles. With a vehicle like that it was the carbuerators job to mix and meter the air/fuel ratio. Having a throttle body spacer was like simulating and longer intake runner, which does give you some extra low end torque. Then they would combine the spacers with a high rise intake and do some more tweeking with the air/fuel mixture. Also they would do other adjustments to the engine i.e. ign. timiing and etc. Todays vehicles do not mix the air fuel ratio as the older cars did. Today fuel injection is computer controlled by duty cycles (off and on rate of a fuel injector) and pulse width modulation (how long the fuel injector is open/closed) The way the fuel is introduced into fuel injected engines is the fuel injector is positioned as close to the intake valve as possible (dependent on head design). So basically when the injector sprays the fuel inside it actually mixes in the combustion chamber, instead of atomizing and mixing with the fuel as it comes down the intake maniflold, through the ports, and on into the heads as the carbuerated vehicles did. So the purpose of the throttle body spacer is to add a little bit of extra distance that the air has to travel to get to where its going. When air has further to travel it does speed up to make up for the extra distance when its being sucked in to the engine. They had great advantages to the older vehicles, but as far as the newer computer controlled vehicles.....Im not all pumped up about getting one for myself. They do however look pretty with all their anodized colors you can get them in. Maybe thats what you're really paying for is the anodizing process..lol I'll let yall decide if they're worth getting or not. IM DONE!