Husqvarna Fuel Injection - Tuning

November 20, 2009, version

Click pictures to supersize.

iBeat Kit

iBeat comes in 2 flavors now, version 1 and version 2.

Version 1 is described below. You can set throttle position sensor voltage and three fedback values for different throttle ranges. Version 1 works on '08 and '09 models.

Version 2 is not described on this page, but you can visit the Cafe Husky forums and read all about it. Version 2 uses 'adaptive feedback' of which I know nothing, but it seems much more sophisticated than version 1. Version 2 works on '09 and up models.

You can buy either version from most Husqvarna dealers; they are stock Husky parts. Version 2 can also be purchased at Semco Designs at a much more reasonable price than Husky retail.




4/25/08 - I saw a post on ThumperTalk about the iBeat fuel injection tuning kit and I ordered one from Bill's Motorcycle Plus (888-806-1153)  <>. The kit came today: what next?

busyWhat's inside the box.

A booklet (in Italian, English, French, German, Spanish, and Japanese):
  Introduction: safety procedures, prohibited acts, precautions, copyright, use restrictions, limited warranty, and liability notes.
  Product Specifications
  Install and Uninstall Procedures
  Starting the Software
  Failure Help
  Contact Information

The DVD contains the iBeat software and Operation Manual (50 pages, pdf).

The communication cable has a serial connector on one end and a connector that plugs into the vehicle's diagnostic connector (located behind the headlight on the '08 TE610). There is a small black box in-line in the cable.

I have a MacBook Pro running OSX 10.5 and BootCamp with Windows XP SP2 installed. I plan to install the iBeat software on my MBP and will provide information about my tuning experiences on this page. Stay Tuned!

4/27/08 - This section describes what I did on my '08 TE610. Another section will deal with my '09 TE310.

I read the iBeat Diagnostic Tool (IDT) Operation Manual, all 50 pages, before starting to use the IDT software. Then I read it again. I am impressed with how much you can find out about the ECU and the 8 sensors that feed it, how you can easily generate maintenance logs, and how you can check for error conditions. BUT, I'm NOT impressed with the changes you can make, which are exactly four. That's right, four. You can set the mv level for the throttle position sensor (TPS). You can set three feedback adjustment values which relate to three throttle positions. You can't see or change anything to do with the actual ignition map, like change the shape of a curve. Although I don't know anything about fuel injection and ignition mapping besides the most basic of principles of how they work, I would have expected to be able to make more changes than I see in IDT. But let's get back to the business at hand - installing and using IDT.

I installed the IDT application from the DVD. Then I installed the driver for a Keyspan USB/serial adapter (USA-19H) on my MBP, configured the communication port, plugged the Keyspan adapter into a USB port on my MBP, plugged the iBeat communication cable into the Keyspan adapter and the TE610 diagnostic connector, turned on the ignition key, and started IDT. It tried to communicate then stopped with an error message. After checking everything twice and concluding that it was either right or it was beyond me to detect the problem, I started IDT again. Again, it stopped with an error message. After thinking a bit, I decided that the red button on the handlebar switch needed to be out, and after releasing it, I re-seated the diagnostic connector and restarted IDT. Success - the screen came alive with information about my TE. I don't know if it was the red button out or the connector reseat that fixed it; I'll recheck on my next session.

I ran through all the screens staring at the information provided, but otherwise made no changes. Finally, I decided to check the TPS. The reading was incorrect, so I changed it from 986 to 977 mv, all according to the instructions in the manual. Although I don't have access to a service manual for details about the process, I feel that what I did was correct. I'll pay real close attention to engine response the next time I ride my TE.

Both the IDT Operation Manual and the IDT application often remind you that you should read the service manual before making any changes to the parameters. I have repeatedly tried to get a 2008 TE610 Service Manual, but so far, have been unsuccessful. I have the '07 version, which pretty much covers everything on the '08 TE except fuel injection. Until I get an '08 service manual, I won't be making any more changes with IDT.

Well, that's it for now. So far, I like what I bought, despite my disappointment with how many 'things' I can change. I may find that what is there is all that is needed. I plan to study the various FI and iBeat posts on ThumperTalk and ADVrider and I'll try again to get a service manual to find out about FI tuning. Until then, the iBeat goes on.....


1/27/09 - I have extracted some information about sensors from the 2008 DOHC Workshop Manual (for the TE 250, 450, 510, and SMR 510). Similar information for the TE 610 is available in the 2008 TE 610 Workshop Manual; see chapter M.

The first list shows which components of the fuel injection system can be checked with IDT. The second list shows electrical diagram components. Items in the second list with ....................n following the component description correspond to numbered items in the first list. So you can tell at a glance where the fuel injection related items are located in the electrical system.
Items numbered ....................1, 2, 3, 4, 5, 6, 7, and 9 correspond to sensors which feed the ECU.
Items numbered ....................8, 10, 11, and 12 are controlled by the ECU.

Operating instructions for the "DIAGNOSIS SOFTWARE KIT" (IDT) on the fuel injection system - page S.3

The components of the fuel injection system that can be checked with this diagnosis software are the following:
1- AIR TEMPERATURE (Air temperature in the intake manifold)
2- COOLANT TEMPERATURE (Engine coolant temperature)
3- ATMOSPHERIC PRESSURE (Atmospheric pressure in the intake manifold in the current position and altitude)
5- TILT SENSOR (SMR: senses rollover of the vehicle)
6- O2 SENSOR (Senses rich or lean combustion mixture)
7- BATTERY SENSOR (Battery voltage)
8- SENSORS SOURCE (It supplies energy to the sensors)
9- GEARSHIFT POSITION (Current gear position)
10- INJECTOR (Pulse width of fuel injector)
11- IGNITION COIL (It accumulates energy and discharges said energy to spark plug)
12- O2 HEATER (It warms the O2 sensor to a temperature suitable for the sensor to give stable output)


E1. Electronic power unit
E2. Alternator
E3. Voltage regulator
E4. Rear stop switch
E5. Front stop switch
E6. Injector....................10
E7. Instrument
E8. R.H. front turn indicator
E9. Front headlamp
E10. Electric fan
E11. L.H. front turn indicator
E12. Horn
E13. L.H. commutator
E14. Turn indicators flasher
E15. Tail light
E16. Battery
E17. Electric start remote control switch
E18. Starting motor
E19. Spark plug
E20. R.H. rear turn indicator
E21. L.H. rear turn indicator
E22. Gear shift position sensor....................9
E23. H.T. Coil....................11
E24. Position throttle control sensor (E40)....................4
E25. R.H. switch
E26. Ignition switch
E27. Clutch microswitch
E28. Speed sensor
E29. Relay for electric fan
E30. DC relay
E31. Lambda probe....................6 and 12
E32. Air temperature sensor (E40)....................1
E33. Coolant temperature sensor....................2
E34. Pressure sensor (E40)....................3
E35. Fuel pump
E36. Fall sensor (SMR)....................5
E37. Fuses
E38. Power relay....................8
E39. Power unit interface
E40. M.A.Q.S. (E34+E24+E32)

Internal to ECU....................7