So your looking for some quick bolt on horsepower. One of the first modifications a lot of enthusiasts will do is a cold air induction or intake kit.And depending of design and the level that your engine is modified to,you can gain 10-20 horsepower.
The idea behind these kits is to bring in fresh cold air from outside the vehicle into your engine. remember cold air is denser then the air under the hood. A denser air charge means that there is more air going in to the engine. Now,let's talk about the stock air intake assembly for a minute. It gets the job done..barely. It is designed to help keep noise down and that's fine however is seams that in keeping the noise down it is also very restrictive. And remember folks,you engine is an air pump,the smoother and more effectively it can pump air the better it's gonna work.So why not get a good start and get the air coming in efficiently?
Some cold air kits like the Spectre Performance 9900 Air Intake Kit
and the AEM 21-426P Polished Cold Air Intake System
have shirt ram kits that bolt pretty much right into where the stock air intake assembly is. There are some kits that allow you to mount the intake pipe down by the bumper but,you might want keep in mind that rain can get into some strange places.
Aftermarket intake systems smooth out the air flow coming in and that is primarily how they work. Most if not all kits have smooth stainless steel or aluminum tubing with gradual bends and will accommodate most if not all the sensors that may be a part or the factory assembly.
Another modification I would recommend is a throttle body spacer. The install between the throttle body and intake plenum (the flat surface in the intake manifold where the throttle body bolts to). What these spacers do in effect is increase the length if the intake runner so to speak. This brings your torque curve into play at lower RPM. That is the simple version. The long version sounds more like this. The intake pulse is the charge of air fuel mixture that goes into the combustion chamber when the intake valve opens,the denser and bigger the charge is,the more air fuel mixture you are going to get into the combustion chamber. The trick is to create a increased pulse without sacrificing vacuum. Throttle body spacers like the Airaid 400-531 PowerAid Red Anodized Aluminum Throttle Body Spacer
and Jet Chips 62137 Throttle Body Spacer
also incorporate tapped throttle plate holes that twist the incoming air. What this does is assist in helping the air fuel mixture mix better for better combustion. The jury is still out on whether or not the tapping actually works. I can tell you that my personal design bolted horsepower onto my truck that I felt in the seat of my pants. So I think it does.
The idea behind these kits is to bring in fresh cold air from outside the vehicle into your engine. remember cold air is denser then the air under the hood. A denser air charge means that there is more air going in to the engine. Now,let's talk about the stock air intake assembly for a minute. It gets the job done..barely. It is designed to help keep noise down and that's fine however is seams that in keeping the noise down it is also very restrictive. And remember folks,you engine is an air pump,the smoother and more effectively it can pump air the better it's gonna work.So why not get a good start and get the air coming in efficiently?
Some cold air kits like the Spectre Performance 9900 Air Intake Kit
and the AEM 21-426P Polished Cold Air Intake System have shirt ram kits that bolt pretty much right into where the stock air intake assembly is. There are some kits that allow you to mount the intake pipe down by the bumper but,you might want keep in mind that rain can get into some strange places.Aftermarket intake systems smooth out the air flow coming in and that is primarily how they work. Most if not all kits have smooth stainless steel or aluminum tubing with gradual bends and will accommodate most if not all the sensors that may be a part or the factory assembly.
Another modification I would recommend is a throttle body spacer. The install between the throttle body and intake plenum (the flat surface in the intake manifold where the throttle body bolts to). What these spacers do in effect is increase the length if the intake runner so to speak. This brings your torque curve into play at lower RPM. That is the simple version. The long version sounds more like this. The intake pulse is the charge of air fuel mixture that goes into the combustion chamber when the intake valve opens,the denser and bigger the charge is,the more air fuel mixture you are going to get into the combustion chamber. The trick is to create a increased pulse without sacrificing vacuum. Throttle body spacers like the Airaid 400-531 PowerAid Red Anodized Aluminum Throttle Body Spacer
and Jet Chips 62137 Throttle Body Spacer also incorporate tapped throttle plate holes that twist the incoming air. What this does is assist in helping the air fuel mixture mix better for better combustion. The jury is still out on whether or not the tapping actually works. I can tell you that my personal design bolted horsepower onto my truck that I felt in the seat of my pants. So I think it does. 
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