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FL-XiED Fuel Enrichment for Harley EFI Plug-n-Play..More Details

Availability: In stock
Item #: DK-FLXiED-10-NR
Manufacturer: DK Custom Products

Plug-n-Play Fuel Enrichment for Fuel Injected Harley-Davidsons FL-XiED Lowers Engine & Exhaust Temps - Improves Throttle Response Harley-Davidson DK Custom Nightrider Stage 1

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Dynamic Tuning For Harley-Davidson Motorcycles

Xtreme Inline Enrichment Device


A Cost Effective Alternative to an Aftermarket Tuner & Dyno Runs.

This Patented Device Dynamically Adjusts to Changes Made to Your Bike!

The Patented FL-XiEDs will Cool Your Bike Down & Make it Run Better!


The Patented Plug-n-Play FL-XiED-10 richens the Air Fuel Ratio from14.6:1 to 14.0:1 in closed loop mode.

Recommended for 1 of the 4 Set-Ups Below:


  • Stock Configuration
  • High flow air cleaner
  • High flow exhaust
  • "Stage I" (both high flow exhaust & air cleaner)

Will NOT Work with Stage II, Stage III, etc.  


Immediate Benefits:

  • Lower Engine Temperature
  • Lower Exhaust Temperature
  • Improved Throttle Response
  • Reduced Surging
  • Reduced Pinging



  • Touring  2010-2016
  • Softail  2012-2017
  • Dyna  2012-2017

 Recommended for: Stock Bikes, & Stage I Bikes (High Flow Intake & Exhaust) Will NOT Work with Stage II, III, or IV.

Note:  It is recommended that bikes that have full exhaust system upgrades, or those with the catalytic converter removed, use the FL-ViED-10 product.  Fine tuning of the O2 sensor signals may be required to optimize the fuel mixture when the catalytic converter is not in place.

Simple install-comes with instructions.  No tools required, installs in a few minutes.


They work inline with the smaller H-D Delphi heated narrow band 02 sensors and Delphi ECM to richen the fuel mixtures, adding 6% more fuel to the engine in closed loop mode.

There is an indirect richening of the open loop fuel mixtures through the learning mode, or adaptive fuel value action built into your ECM.  This ensures the richer 13.8-12.5:1 AFR's are ALSO adjusted in heavy/full throttle operation.

 LINK to All Dynamic Tuners

Kick ass product, bikes running cooler and smoother. -Lyle


"409” ignition wires provide continuous heat protection up to 600-degrees Fahrenheit

Customer Reviews

Excellent Review by Wieland
I install the Fl-Xied on my 2013 Roadglide Ultra in about 30 minutes. The performance regarding power and throttle were immediate. Been riding for several hundred miles and the power and overall response of the bike are like night and day. Wished I would have discovered this before. (Posted on 11/1/2021)
Work as described Review by 2010 FLHTCU
I added these to my 2010 FLHTCU with factory exhaust, have to say it seemed to cool it slightly, then I changed exhaust and air cleaner S&S Pro Tune and Super Teardrop with neighbor hater mufflers. The bike runs great and no tuner has been used. Fuel enrichment seems fair and useable. Bike sounds great and runs much cooler with that combination. I have a Jim's Force Flow as well and it hardly cycles on now, it used to run constantly after it switched on. Now it only runs when I'm at low speed for a while. (Posted on 9/24/2021)
Good remedy Review by Vicloc
Affordable. Arrived on time. Clear instructions. Easy to install; less than 30 minutes. Until a friend told me, I had no idea that my Road Glide ran lean from the factory & even leaner after I added an open-air filter and new slip-on pipes. I am happy that I found this product to resolve the issue and extend the life of my motorcycle engine. I recommend. (Posted on 9/22/2021)
Easy install Review by Freewheeler
Installed in less than 30 minutes, between rain and being out of town I have only put a couple hundred miles on the trike, it sure seems to run much better than before. Can’t wait to get back home to put some real miles on it. (Posted on 7/27/2021)
2015 Road King Review by Johnny Cakes
This is the 2nd unit I have purchased. (Other was for a Dyna). Immediate response from stock (example: engine heat reduction and increased throttle response). Currently changed to full exhaust and will add big sucker. Not looking for maximum engine performance (I'm tool old for that anyways). Very pleased with this product. Been using it for 3 years now. (Posted on 6/30/2021)
Easy to Install, Nice Upgrade Review by W9awx
Purchased the enrichment plug and play kit for my stock 2015 Softail Heritage Classic. Very simple install. Total time was about 30 minutes with a bunch of futzing around figuring out where to run the ground wires. Engine sounds smoother getting the little extra fuel it needs. No barking on deceleration now and acceleration is much smoother too. If you do not have plans to move into a stage two, three, or four at some point, this is a no-brainer. (Posted on 10/29/2020)

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