Fuelpak Fuel Management

Fuelpak is the most straightforward and cost-effective fuel management solution for custom-tailored mapping on Delphi equipped Harley-Davidson motorcycles.


General Topics
I have a Softail with a 200mm rear tire, which Fuelpak do I use?

· 07-10 FATBOY

· 01-06 FATBOY
· 05-10 DELUXE
· 01-10 HERITAGE
· 01-07 DUECE

Where can I get a copy of the application chart?

Answer: If you want a pdf copy of the application chart, you can lookup your map here.

I have the SE Pro Race Tuner; will the Fuelpak work with that?

Answer: No, the Fuelpak is not compatible with the race tuner. Correct Fuelpak mapping assumes the Fuelpak knows what the factory computer is trying to do at all times and adjusts for lean or rich areas. The settings in the Race Tuner would be fully custom and the Fuelpak would not be able to know what areas are now too lean or too rich. If you already have the Race Tuner, you should take your bike back to the dealer for a re-mapping dyno session. A competent dyno operator should be able to dial in you Race Tuner for any changes you make.

How do I adjust the idle speed with my Fuelpak?

Answer: The idle speed is controlled by the factory ECM. The Fuelpak can’t increase or decrease the idle speed.

My Fuelpak is not a version 12; can I have it upgraded?

Answer: For $29.95 plus shipping, you can have your Fuelpak upgraded to the version 12 software. Typical turn around time is 1-2 days. If you want to upgrade your Fuelpak software, call us at (562) 921-0071 to get an RA number and shipping address.

I don’t understand how to input my map.

Answer: Visit the Fuelpak Videos page to find Video Tutorials for your product.

How do I find the map I need to put into the Fuelpak?

Answer: If you want a pdf copy of the application chart, you can lookup your map here.

What do the modes control?

Answer: We do not release what each of the modes control. If you think you have a rideability issue and want to adjust the map, call one of our techs and we can help you.

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Where can I get a copy of the installation instructions?

Answer: Follow this link to find copies of all the installation instructions.

Why should I install a high flow air filter?

Answer: Adding a high flow air filter to your freer flowing exhaust will allow you to realize the full potential of your bike.

Why should I install a high flow air filter?

Answer: Adding a high flow air filter to your freer flowing exhaust will allow you to realize the full potential of your bike.

Will the Fuelpak void my warranty?

Answer: Some dealers will still honor the factory warranty after a Fuelpak installation, but some will not. It is up to your dealer. Often the dealer will honor the warranty if you pay them to do the Fuelpak installation.

What is the warranty on the Fuelpak?

Answer: The Fuelpak is warranted to be free of manufacturing defects for a period of 90 days after the initial purchase date. This warranty is limited to the repair or replacement of the Fuelpak and is not extended to installation charges

My bike is not running right, my Fuelpak does not seem to be working correctly. Is there anything I can check before calling?

Answer: Modes 21 and 22 are diagnostic modes. Mode 21 shows you the current throttle position. The value at mode 21 should read 0 with your hand off the throttle and immediately start scrolling up (1,2,3…) as you twist the throttle open and should climb all the way to 99 at wide open throttle. If it does not do this, go to mode 19 and roll the throttle all the way open then roll it all the way shut by hand, do not let it shut by itself. Go back to mode 21 and re-verify. Mode 22 shows the current engine rpm. Start the engine and go to mode 22. A warm engine will idle between 900-1200 rpm which should show up as a 9-12 in mode 22. the rpm reading should follow the engine rpm as it goes up and down.

My settings in my paperwork are different from the internet, which one is right?

Answer: Always trust the internet settings. They are the most up-to-date. We do occasionally make adjustments to the maps and those adjustments are reflected in the map values on the internet.

My bike feels like it is running out of gas when I am approaching a stop.

Answer: Increase the value in mode 23 to 25 and try that. This will probably lead to some decel popping; it will be a trade off.

I checked my plugs and they are very white; is my bike running lean?

Answer: EFI is very efficient and that makes it very difficult to read the plugs. They will not color the same way as with a carbureted engine does. If you are not having rideability issues it is unlikely you are running too lean.

My pipe “pops” when coming to a stop, what can I do to eliminate that?

Answer: The Fuelpak has a function which shuts off the fuel when decelerating. No fuel=no pop. Obviously the Fuelpak has to turn the fuel back on at some point or the engine would die. Not all popping can be eliminated, but this feature does lessen it. Mode 23 controls the rpm where the fuel is turned back on. Try lowering this by one number and see if it helps you. If you have done this and have gotten to 14 or your bike is stalling when coming to a stop, that is all you can do and you will not be able to lessen the popping without changing the pipes or installing quieter baffles. The popping is not harmful, just annoying.

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What is the difference between the “G” model and the standard models?

Answer: The G model Fuelpaks (ie. 61001G) are specific to the state of California. They have special software which locks out fuel tuning in areas controlled by emissions testing. This limited tuning allows the Fuelpak to remain in compliance with Ca ARB regulations and is the only version legal in the state of California on public roads.

What is an “EX” model?

Answer: The EX designation refers to our G models special to California. See the paragraph on G models.

I can't program in my map because the numbers won’t go that high. I tried to enter my Fuelpak map, but the numbers wont go high enough; what do I do?

Answer: Most likely you have an older version of the Fuelpak. You can view the version number of the internal software in mode 20. if you have a version 10 or 11, you can have it upgraded to version 12. See the version 12 upgrade question.

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