Norton/Ninja400R Velocity Stacks ECU Flash Package Deal – Kawasaki Ninja 400 / Z400

From: Original price was: $594.95.Current price is: $544.95.

DO NOT SHIP until we have emailed you with shipping instructions AFTER you have placed your order, and it has been confirmed!

*MotoAmerica Tune is >ONLY< for MotoAmerica racers. It IS NOT for club, track, or street.*

*Please select only the standard tune unless you already have our velocity stacks or are a MotoAmerica Racer*


FREE US SHIPPING on this item!

We DO NOT sell OEM ECU’s or do ECU cores, you MUST send in an ECU for us to flash.

*You must send in your OEM ECU to be flashed.  The price includes FREE return shipping to you in the US.

Current turnaround time to send in your ECU to be flashed is typically only 1-3 business days.

Once you place your order, we’ll contact you with shipping information to send in your ECU.

If you have already purchased an FTECU kit and have a license for your ECU, please email us at for a discounted price to use your license.

For more information on ECU flashing, read our article here:  Power Commander vs. Bazzaz Z-Fi vs. ECU Flash vs. aRacer Race ECU

*We recommend installing a block off plate at the same time as flashing the ECU or you will get some backfiring from the exhaust.

Already have a full exhaust on your bike? You can still save $50 on our Ninja400R Superbike Velocity Stacks paired with our custom tuned Norton Race Spec ECU flash!

By far the best power and performance bang-for-the-buck upgrade for your Ninja 4oo is to install a top performing exhaust with our Ninja400R Superbike Velocity Stacks and our Race Spec ECU Flash.  Add 7+ horsepower and 2.5 ft*lbs of torque to your Ninja 400!

*We recommend installing a block off plate at the same time as flashing the ECU or you will get some backfiring from the exhaust.

Our flash does NOT affect CELs (Check Engine Lights), if you have a check engine light from removing the PAIR or any EPA systems, and wish to cancel them, you will need to research the resistors needed for install to cancel them. CELs from blocking off the PAIR or removing the EVAP canister do not affect how the bike runs, if you are bothered by the CEL there are extensive articles on that explain what resistors are needed to cancel these CELs. However, most racers are not bothered by these, and run with them regardless.


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This dyno chart shows the dramatic improvement gained on the same bike with the same exhaust just by adding our Ninja400R Superbike Velocity Stacks!  Look at that top end power!!!
Norton Flash Ninja400R Velocity Stacks Spark Exhaust Dyno Chart Norton Motorsports

This dyno chart shows the performance of the top 3 exhausts combined with our Ninja400R Velocity Stacks and our Norton Race Spec ECU flash that is optimized for this setup:

Ninja400R Velocity Stacks Spark Graves Akrapovic exhaust Norton Race Spec ECU Flash


Changes we make in the ECU to achieve these improvements include:

-Remapped fuel delivery by MAP Pressure and TPS that is optimized for a high flow air filter and several different full exhaust systems (be sure to specify which exhaust system you have when ordering). We also tested this flashed ECU with a completely stock bike and no other changes and gained similar improvements across the board, including a dramatic increase in horsepower and much faster acceleration.

-Smoothed out On-Off-On throttle transition and idle roll-on throttle transition

-Remapped ignition timing

-Increased idle speed

-Reduced engine braking

-Lowered Fan Temperatures

-Disabled the USB / ECT Error

-Disabled the OEM EVAP Purge Valve

-Disabled the OEM closed loop O2 sensor system

-Disabled the OEM Air Switching Valve

-Disabled the OEM injector deceleration cut

And yes, you read that correctly, whether you have a bone stock bike, slipon exhaust, or a full race exhaust, you no longer need a Power Commander, Bazzaz, or other piggyback fuel controller once we flash your stock ECU. You still may want to fine tune your bike with a piggyback fuel controller, since every bike is slightly different, but it isn’t necessary and our tuning is much more accurate than any “off the shelf” base maps you can download online. Installing a flashed ECU also could not be easier. Unplug the stock ECU, and plug in the flashed ECU. That’s it!


Additional information

Weight 1.2 lbs
Dimensions 7 × 6 × 5 in