Air Doc


How can we be sure our order will be filled accurately with the right part for the vehicle?

Our web site was designed to allow you select the correct application for your vehicle. To help us out, please always include a note with your PayPal payment telling us what year, vehicle make & model, and which engine you have. That way we can then contact you if we have any questions.

Why is no air filter included with your performance kits?

Air Doc Intakes is not an air filter manufacturer, and this allows you, the consumer to select which performance air filter you would prefer to use with your system by purchasing it from your own most convenient source. This takes us out of the oiled gauze vs foam vs synthetic debate, and lets you decide which filter is best for you. If you already have replacement high flow replacement filter, you can add our system without spending money on a second (included) filter you would not need.

Why not replace the factory air filter box with something else, or get rid of it, like other CAI brands do?

Our systems use a "closed" system design. In use with trucks that see exposure to extreme conditions including deep water, mud, and powder snow, the air filter element is enclosed in the factory box and not exposed to moisture that can clog the intake flow. Unlike an "open" design, the air is brought in from through the inner fender inlet snorkel from outside the under-hood heated environment. The large diameter Air Doc Intake pipe maintains maximum smooth flow of the intake charge by replacing the stock throttle body resonator box and the accordion style stock connecter hoses drawing in outside air. Often times calling an open system a cold air intake is entirely inaccurate by their very nature. It is possible in specific applications to increase the initial intake volume by simply having the filter on the end of a tube.

However, you must consider the source of the air being drawn in. Sticking a filter on the end of a pipe in the engine compartment results in drawing in air that has been heated by the engine, exhaust manifold, post radiator air, and other hot objects under the hood. More warm air does not make power, a quick moving volume of cool air does. This is why many competitors build contraptions of all sorts to attempt to barricade the filter from the engine heat, but note that they cannot make a tight seal under any circumstance.

Do the Air Doc Intake systems retain all factory emission connections?

Yes, all of our intake systems retain all factory emission connections for all vehicles covered by our applications.

Are Air Doc Intake systems easy to install?

Absolutely! Every kit comes with detailed installation instructions with photographs to make it possible for a smooth and simple install, require only minimal basic tools, and are designed so that any enthusiast, novice to the experienced veteran, can install one on their vehicle with no problems. Most will find the install takes less than 30 minutes. If you have any questions after receiving your Air Doc Intake and reviewing the instructions, contact us at and we will be glad to assist you.

What if I cannot seem to get the T Bolt Clamp in place/nut started?

Use a channel lock pliers an to carefully apply closing pressure on the T bolt and barrel (the tube shaped barrel that the bolt pokes through) and then pinch the clamp tighter/firmer than your fingers can do alone, and then start the nut.

Does installing an Air Doc Intake require any permanent modification to my vehicle that should be a concern at the end of a lease or trade in?

No. (The only permanent modification with the H367 system for 2005/07 models is drilling one 1/8" hole in the plastic flange of the air filter box where the new Air Doc inlet snorkel is anchored by a single #6 screw. When the screw is removed, and the stock snorkel is re-installed this hole is not easily visible, and has no impact on the function of the stock system.)

The H308, H3A, H2, and GM02 models require absolutely no irreversible modifications.

Will the Air Doc Intake work with a throttle body spacer installed?

Our official answer is: NO. Even that small spacer from various manufacturers changes the angel of relationship between the throttle body inlet and the air filter box outlet and/or results in the Air Doc pipe being too long, and many times will prevent our systems from being properly installed. We have had two customers try this without success, I have not personally attempted to do this myself, but feel comfortable with the information these customers relayed to me. They BOTH removed the TB spacer and reported seeing more improvement running the Air Doc Intake.

However, there are at least two customers that are running the Airaid TB spacer on their 2007 H3s, and a different brand spacer on a 2008 H3, and have reported no difficulty with the installation of the Air Doc Intake. 

Why a steel pipe and not plastic, polished stainless or aluminum?

The material used has very little effect upon intake performance itself, but air flow is critical to increased performance.

We have extensive years of experience with steel in all facets of applications, automotive, motorcycle, industrial, and commercial and simply find it the best material for strength and durability, when done correctly. Below is our analysis regarding truck intakes.

Plastic. Cons: Can break, and even melt very easily. Certain intake makers using plastic extensively have had recalls on their products because of cracks or small pieces breaking off and getting sucked into the TB. This is from our competitorsí own information. Plus we think that plastic looks cheap, looks even worse over time, and definitely has mass production written all over it. Pros: Plastic has a slightly better thermal properties and to a small degree better reduces heat absorption. No corrosion and has unlimited shaping properties/can be molded.

Aluminum: Cons: Expensive when polished, not as strong or damage resistant as steel, increased thermal absorption, and can corrode over extended time. More difficult to paint or finish than steel. Pros: Requires no finish, and is significantly lighter than steel as well as easier to tool/machine. Stronger and more durable than most plastic.

Stainless. Cons: Very expensive material, cost have increased dramatically this year alone. In this application can discolor over time with minimal heat. Some heat absorption. Pros: Insignificant corrosion, can be easily painted and is very strong placing the only possible failure on clamps or couplers.

Steel. Cons: Needs sealing/painting to avoid corrosion/rust, and finish could potentially peal or flake with same heat absorption as stainless. Pros: Less expensive, equally durable and as strong a material as stainless, cheaper to tool and weld as polishing is removed from the equation. When properly finished corrosion is completely controlled and less expensive than polishing other metals. Can easily be repainted.

What can I expect if I add an Air Doc Intake to my vehicle?

You will not transform an I5 into a V8. Our system can and will do everything and more than our competitor systems, while screaming overkill all the while. We know what dyno results are in RWD Canyons, our systems work. We have no AWD dyno data as the last AWD dyno shop in the Detroit area went out of business long ago, but we expect 7-12 HP and similar torque at the wheels by adding an Air Doc Intake with high flow after market filter. You can increase this performance improvement by adding a CAT back exhaust system, and getting your PCM tuned.

With the new Alpha/LH8 V8, H2, and GM full sized truck models now available you can expect a bit more as all 8 cylinders are breathing more efficiently and all making more power. With a V8 it is reasonable to expect 10-16 HP and similar torque. We have made every effort to have our systems make much of their power starting in the mid range where it can be used.

You should also be able to measure a slight increase in fuel economy with normal driving.

Does an Air Doc Intake system increase noise when driving?

There is definitely a change in intake sound when under throttle, but in our opinion, the enthusiasts that are interested in this product will not find it objectionable or offensive. When driving normally it is nearly identical in sound to a stock system. When at wide open throttle, you will hear it. It is much quieter than an open system, but gets the job done better.

You may also notice a different sounding exhaust note with our intakes installed. More air in means more air out.

If I contact you at your web site or make an order, what is your privacy policy?

This one is simple. We do not share your information with anyone. Your email, payment and contact information stays only with us and will not be sold or given away ever!

How do you ship an order?

We ship every morning Mon. - Sat. by U.S. Postal Service, insured. We do not use tracking numbers as a loss would be covered by the insurance, and we will help you with your loss claim, should there ever be one. If you are outside the U.S., please contact us for a shipping quote as our regular posted rates on our web site are not for international shipping charges.

Is PayPal the only payment option to make a purchase?

While PayPal is our preferred method of payment, we will accept U.S. Post Office or a major U.S. Bank money orders, and can even do a credit card by phone if you just have to. Contact us through our web site with your payment questions.


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