Frequently Asked Questions

Check back daily!

R2C engineers will provide responses to your questions.

Most low-restriction air filters start with a sheet of cotton gauze, almost identical to the stuff used to dress wounds. We can all agree that cuts and high-performance engines have very different needs. So why is there a bandage in your engine?

Most "performance" filter companies (names withheld to protect the guilty) use gauze to achieve low air restriction. We use a patent-pending filter media that was designed specifically for engine intake filtration. All of our filter and intake systems are engine-specific so they maximize the performance of your vehicle.

Does someone have a bandage?
(Cotton gauze filter discussion)

During the course of our product development, we did a lot investigation on the low restriction products currently available to the auto enthusiast. Cotton gauze dominates this market and while all gauzes start out as the same white color, they then get tinted with various hues of oil.

There are red, blue and some green ones. We even saw one that was kind of orange (red gone wrong, maybe). One thing they have in common, regardless of their color, is they are all made from a material that was never intended to be used for filtration.

We were mildly amused by the descriptions some of these suppliers used to describe and justify the use of something other than a purpose built material for filters. Some counted the number of layers they used. Others described the gradient density of their layers, but the most telling was the one who proudly proclaimed their use of “medical grade gauze.” We still haven’t figured out what that has to do with protecting your engine, but it might come in handy if you’re injured while on the road.

What’s wrong with cotton gauze and what can do a better job?
The answer to that depends on what you expect your air filter to do. Being the old-fashioned type, we expect an air filter to protect our engine from airborne particulate and that means getting the highest possible filtration efficiency. If you can accomplish that at a restriction level equivalent to the gauze products, most people would agree they’d rather have higher effciency than lower.

Most low-restriction air filters start with a sheet of cotton gauze, almost identical to the stuff used to dress wounds. We can all agree that cuts and high-performance engines have very different needs. So why is there a bandage in your engine?

Most "performance" filter companies (names withheld to protect the guilty) use gauze to achieve low air restriction. We use a patent-pending filter media that was designed specifically for engine intake filtration. All of our filter and intake systems are engine-specific so they maximize the performance of your vehicle.

Good morning and thanks for your inquiry.

We do not currently offer factory replacement filters for the Ram applications. This is an area that we will develop in the near future.

Thanks for your inquiry.

Extensive dyno and track testing has revealed the R2C 4412 filter base and R10522 filter produce the most power. Advantages in torque occur at mid RPM levels and are maintained through peak. The bases are available in carbon fiber as well as composite for IMCA 2V racers.

Extensive dyno and track testing has revealed the R2C 4412 filter base and R10522 filter produce the most power. Advantages in torque occur at mid RPM levels and are maintained through peak. The bases are available in carbon fiber as well as composite for IMCA 2V racers.

Does the 650 double pump Holley still have a choke tower?

Regards,

R2C

Use the CFD AC10617 for best results across the power band on your application. In 450" + applications, it made excellent torque and power through 7500 RPM. The 4 hole is better in the higher ranges but gives up performance from 4500-7000.

Yes.

The stack seals are specific and will accomodate stacks at 2.9"-3.0"+.

The ground controls particulate static. It also assists in particulate loading on the face.

Thanks

R2C

R2C filters feature a synthetic media that is fully compatible with washing.  Biodegradable cleaners such as Simple Green or other mild shop degreasers can be used. Simply place the filter in a solution or spray the cleaner on the filter. Allow the solution to loosen the particulate and then rinse thoroughly. Shake the filter or use compressed air from the inside outward to remove residual water and allow a full day to dry. While the media may discolor and become light gray,filter efficiency and restriction are not affected.

Replacement filters are available for all R2C intake systems.

Thanks

R2C