Ford Focus RS Accessport Available Now!

You heard right!  As Cody mentioned, support for the Ford Focus RS is now available!  This includes the Accessport with Stage 1 maps, COBB High Flow Air Filter, COBB Shift Knob, and COBB Rear Motor Mount.

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The Accessport V3 is the world’s best selling, most flexible ECU upgrade solution for Ford. Unlock power hidden within the vehicle by replacing conservative factory settings with more aggressive calibrations. Upgrade forever with off-the-shelf (OTS) calibrations for most bolt-on modifications. It’s the last engine management solution you’ll ever need.


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COBB High Flow Filters are designed to permit very high flow rates, minimize restriction, maximize filtration and provide a long life filter. Using propriety Woven cotton and metal mesh with a precision molded rubber base, the COBB High Flow Filter ensures that only clean air passes into your engine for maximum efficiency. Why not treat your car to fresh air with a COBB High Flow Filter and let it reward you with increased power, fuel economy and money savings!  Both of these products are available together with the Stage 1 Power Package.

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The COBB Shift Knob is designed to keep those extended shifting sessions exhilarating. The billet aluminum base is anodized in your choice of red or black to help set the mood and is internally threaded to provide a tight fit onto the shifter shaft that won’t come loose in the most frenzied of gear changes. The satin black or white delrin knob feels incredible and has a perfectly round contour to fit right in the palm of your hand. The package is complete with a COBB logo laser etched into the base to let everyone know whose knob you hold. The knob weighs in at a lightweight 113.5 grams, encouraging fast, smooth thrusts into every gear. Spin on a COBB Knob and go for a ride!


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The COBB Rear Motor Mount is the best way to minimize engine movement, improve traction, and reduce wheel hop without major impact to NVH. Typical bushing designs can rattle your teeth out at idle or during throttle input. The COBB RMM utilizes unique voids custom molded into the 85A durometer bushing to absorb vibrations, but still reduce engine movement to aid getting all the power to the ground. The beautifully machined 6061 billet aluminum mount with zinc hardware will make you sad you have to hide it under your car.

Already beyond Stage 1?  Check out the extensive Protuner network capable of dialing in your Focus RS with ANY modifications through custom tuning via your Accessport.


June 30th – Preliminary Stage 1 Power Gains

Our engineering team learned a lot with their time on the RS in England.  After more time on our dyno here at COBB they were able to come up with a safe and reliable Stage1 calibration that still offers some healthy power gains.  The below will be similar to the released Stage 1 Off The Shelf map that will come on the Accessport!


When our baseline numbers for the Focus RS were first released, there was a lot of talk about them being inflated and even more concern surrounding the fact we dyno’d the vehicle in FWD instead of AWD mode.  There’s good reason for that!

The Focus RS does not have a center differential like other AWD vehicles in its class.  Instead, there is an electronically controlled clutch pack that sends a variable amount of power to the rear differential.  This system is called the Rear Drive Unit or RDU.  When the RDU is active (sending power to the rear wheels), it causes the rear wheels to spin faster than the front.  Keep in mind that the dyno rollers are linked front and back so they spin at the same rate.  With the rollers spinning at a constant rate, and the vehicle trying to spin the front and rear wheels at different rates, things don’t mesh well.  When this is the case, the car actually “thinks” it is losing traction which results in it intentionally limiting power.  The best way to dyno the vehicle is in FWD mode with the RDU disconnected.  Even if we were able to prevent the car from limiting power in AWD mode, the gains expressed as a percentage will be identical in either FWD or AWD mode.  The actual number isn’t too relevant as it will be different with varying dynos and conditions.  Check out another post on Interpreting Dyno Results for more details.

The Accessport for the RS platform will be released soon!  Stay tuned for more details on the release and information on hard parts and Staged Packages to come!

June 28th – Baseline Dyno Results

It didn’t take long for us to get the RS on the dyno to see some baseline results.  Check out the video below for our first look at the Focus RS on the Dyno.

June 22nd – Taking Delivery of the Focus RS

If you keep up with our social media pages you know we’ve been having some fun with Live Video.  Last week, we finally got our hands on the new Ford Focus RS here at COBB HQ and Cody took to the interwebs to show off some initial impressions!

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