Sealed Air Intake Systems - True Flow air intake systems are a unique departure from traditional air intake systems. The factory air box is left intact keeping the airflow cooler while protecting the filter from debris and moisture. The factory filter is replaced with one of our foam, high flow, lifetime filters. Finally we eliminate the factory air tube, which can have restrictive mufflers or resonators and replace it with our high flow, powder coated mandrel tube and reinforced silicone couplers to maximize velocity.

True Flow kits are easy to install and maintain. Each kit contains the necessary hardware required to install, (like our custom fiberglass reinforced silicone couplers and stainless steel worm clamps). No modifications are needed, and all factory breathers, sensors and hoses are left intact.

True Flow air filters stop more dirt due to their superior foam technology. Foam has been used for years in off-road applications such as motorcycles, ATVs and Off-Road race vehicles. True Flow developed an air filter using fully reticulated foam cells and specially formulated tackifier that create an impossible journey for dirt particles to enter your engine. More dirt in your engine means lower performance, lower gas mileage, and engine wear. See True Flow’s legendary performance and protection capabilities by watching the True Flow Air Filter Test. The test proves that True Flow stops more dirt, while performance gauze and paper filters let more dirt get through to your engine.

The EPA has estimated that a dirty filter can cause a 10% decrease in fuel efficiency. Because performance gauze and paper filters are only 1/16 of an inch thick, the minute you start driving they get dirty, start to clog and restrict air flow causing a loss in performance. True Flow doesn’t clog because its reticulated foam construction is 16 times thicker than performance gauze or paper. Reticulated foam allows air to flow around the captured dirt. Unlike filters, True Flow provides great airflow even when it gets dirty.

We have the best price around for True Flow air intake systems!  If you want your vehicle to have all the cool, clean air it needs at the lowest price then your only choice is True Flow from Grimm Performance!  You will see horsepower and torque increases!  You will get better gas mileage!  Independent tests prove it!  Grimm Performance provides a 30 day money back guarantee!

See the True Flow product video http://www.trueflow.com/video_1.php

This intake system is designed specifically to fit vehicles with the 2004.5-2005 GM / Chevy Duramax 6.6 Liter LLY Diesel.

Please see below if you would also like to purchase a filter cleaning kit with this system.