My Car
Find Parts
What's New?

Tein's EDFC: What Is It, Why Get It, & How To Order

TEIN (pronounced so as to rhyme with the similarly-spelled VEIN) is one of the foremost suspension suppliers for the aftermarket industry. One of their most innovative items is the Electronic Dampening Force Controller, or EDFC. This simple controller and motor package is designed to make adjusting your TEIN suspension kit as simple as, well, doing nothing! We'll explain...

What is the EDFC and why would I want it?

The EDFC is a kit that can be used with various TEIN suspension kits (most any kit which has the adjustable knob on the top to allow for you to adjust the firmness of the suspension) to adjust the firmness from inside the car using a cool electronic controller.

"Wow how cool!" most people exclaim upon hearing this. But the next comment is usually "but I don't change my settings much. If i just 'set it and forget it' why would I get this?" Here is Heeltoe's take on it...

Yes, many people will set their suspension firmness once and then leave it alone. So if you don't see the inherent value here, we understand. But consider that the reason they are not changing it around is that doing so is a pain in the ass. If it were as easy as pushing a little button, we think more people would adjust their suspension settings more often to suit their mood and needs at the time. Not all roads are created equal, nor are all cars or drivers. The EDFC allows people to take control over how their car is riding and handling over different surfaces and will allow them to get better overall value out of their suspension investment.

Stuff You Need

First, you need a Tein suspension kit which is EDFC compatible. We try to list the EDFC parts needed under compatible TEIN damper kits, but if you are not sure if yours is or not, please contact us for help

Second, you need an EDFC controller kit. As of this writing, the options are the EDFC II, EDFC Active, and EDFC Active Pro.

  • EDFC II: A 1/4 DIN unit that allows adjustment of the front and rear suspension firmness from the driver's seat with a push of a button. Change settings in 16 or 32 increments for fine damper control with up to 3 memory settings.
  • EDFC Active: With the use of an optional GPS sensor, this more modern unit will actively adjust firmer or softer based on the vehicle speed and acceleration. Plus, easier install with partial wireless connectivity.
  • EDFC Active Pro: The full capability of this kit allows the driver to program the suspension to adjust each corner of the car individually to suit different g-loads, accelerating, decelerating, or cornering. It also will target varying speeds as well as offering auxiliary inputs

Third, you need an EDFC motor kit. There are various motor kits available and they are always selected based on the damper-shaft size. We try to list the EDFC parts needed under compatible TEIN damper kits, but if you are not sure what motor kit you need, please contact us for help.

Optional Stuff

The one main optional thing everyone would think about is the Anti-Tangle Kit. This is only needed for cars with STRUT suspensions. So, you wanna know the difference. This article will help you understand the difference between shocks and struts.

The EDFC Active GPS kit is needed in conjunction with the EDFC Active and EDFC Active Pro if you want to utilize the "Active" functions of those controllers.


A Brief History Of the EDFC

TEIN first released the EDFC in 2002 and such as system was largely unheard of in the aftermarket. The kit consisted of a two-part package. There was a controller kit and a motor kit. The motors were designed to replace the adjusting knobs at the top of each damper, and were hard wired with supplied harnesses to a central controller that could be mounted to the dash or wherever.

Original Silver EDFC in it's display-box.

This is the very first unit offered, it was silver in color and featured front and rear controls for individual adjustment. Another neat feature was that while the suspension kits were normally adjusted to 16 points with the hand adjustment, fine motor control allowed the dampers to be adjusted to 32 points, offering finer tunability.

In 2006, the EDFC got an update. The silver case was replaced with a black one...

Black gen 2 EDFC case

This more detailed image shows that the EDFC also offered up three memory settings. Our suggestion to customers was always that you could have a "Commute" setting, a "Fun" setting, and a "Mother-in-law" setting. Also, all EDFCs had been backlit with a green light.

More importantly, TEIN also changed the motors and harnesses. The motor on the left was the original motor, and the smaller one on the right was the newly released one.

Teein EDFC motors compared

These changes were hugely welcome, as the large motors made installation in tight spaces a bit difficult. With the smaller motors it would now be possible for the motors to be installed on the dampers before they are installed in the car. It probably would seem a lot more of a benefit if you'd done the job a few times in various cars. We definitely liked it.

Furthermore, the plugs on the harnesses were all smaller as well. Fishing EDFC wires through the interior is no harder than running stereo wires...but honestly any help in making things smaller is a definite improvement.

The most recent version is the EDFC II.

Tein EDFC II Controller

The EDFC II is functionally the same as its predecessors but it is aesthetically it is stepped up with LED lighting.

But the EDFC Active...Oh So Advanced

When the EDFC Active was released the whole EDFC concept seemed thrust into the 21st century.

EDFC Active from TEIN, with dimensions.

The features here are numerous, and so we are going to refer you to our EDFC Active product page for more details, but here are some bullet points:

  • Wireless Control: Instead of running wires from each motor to the controller, the front and rear motor pairs wire to shared wireless modules that communicate with the controller. So the system is not completely wireless, but installers no longer need to fish through the firewall or the interior.
  • Optional GPS kit allows active functions: With an options GPS kit, the EDFC Active can automatically adjust with speed or g-force (accelerating or decelerating). !! Got that? You can program the EDFC Active to vary the front/rear dampening balance as you are speeding up or slowing down to set positions at the varying speeds. That's awesome!
  • Variable color display: You can change it to match your interior color.

Those features are super awesome. And the EDFC Active uses the exact same motors as the EDFC II.

And then TEIN got really bonkers with the EDFC Active Pro, in which the ante is raised even further. With varying speeds and g-loads, the driver can now program the dampening force to adjust at each corner of the car. And it can do this based on lateral g-forces! So it can firm up the outside wheels in a turn, and even have the rear firm up a little more if, say, more over-steer is needed.

But then, it can be adjusted differently if the corner is a faster or slower one! OMG, there is so much capability with this unit. Truly innovative!

That's a lot of info on the EDFC

But with a purchase like this, sometimes it's best to chat over it. Feel free to call for a consult at any time!

About the Author

Marcus di Sabella Marcus is the founder of Heeltoe Automotive. He's been working with cars (mostly Honda cars) since 1996, and has been providing enthusiasts with excellent products, services, and web experiences since 2002. He's been published in Honda Tuning, and holds a degree in Engineering Technology.


Be the first to comment on this entry!

Leave A Comment

The ability to post urls has been disabled by the site administrator.