PC V with Auto Tune = Holy Grail. for the 2008 & 2009 Husqvarna EFI bikes

We did not specifically test the switch inputs although that would be a great idea.

There are 2 maps. Base map and trim map. There can be a switch connected to the PC V that, as far as I know, disables the trim map and the bike then only runs on the base map. Any switch at all would work... nothing special.

You could ride over to a laptop computer, plug it in, and disable the auto tune in software as well and that does indeed leave the bike running on the base map only.

One example of the usefulness of the switch as Dynojet has posted is to switch between a 'good mpg' base map, and a 'good performance' map. Tune up the bike with a good afr setting for mileage then accept the trim map (which merges the trim map into the base map) then tune the bike up for an afr setting for good power - then you could switch between the 2 modes.


I fully realize that the more learned about these types of things, the more 'what if' questions will be brought up. I simply wanted to get the basic operation of a PC V with auto tune working on some 2009 bikes, and of course on at least 1 2008 bike... this will be a long journey.

excellent post and right on point IMHO.

I think you are a little over nervous... and yes people tend to put up things when they have trouble as opposed to when they are happy... and there is always the 'me too' mentality on forums - people see something posted and they tend to add to the topic, sometimes to a point of creating the appearance of a major issue where there is none.

PC V with Auto Tune does everything. It does not care about what year the bike is, exhaust... or even ibeat settings based on preliminary experiments. Excellent solution for people that live far away from their dealer.

If I bought a new bike it would be a TE EFI with a PC V & Auto Tune. And I really do not like spending money.... at all.

Great idea! Adjust the ibeat FB1 setting for minimum adjustments needed for the PC V in the open loop configuration.

Very applicable!

How durable is the stock ecu? I that goes, or any other major component on a bike it will not run. With specific regards to the Power Commander III / V I really do not know, but after working with them for days and having background in electronics I certainly have no reservations in using their products from a reliability standpoint.

1-I think you are referring to the ecu software. Even the bikes with carbs had those. With the efi bikes not only are there several different ecu versions - TE250/310/450/510/610, SM450/510/610, those also come in early 2008, late 2008, 2009. Each one is programmed with the vin number of the bike.
2-http://www.powercommander.com/powercommander/default.aspx, A device that goes between the injector and the ecu that adds/subtracts pulse width to the injector based on a loaded map inside. Auto Tune is a little box that creates the maps for the PC V. You can look up the price.
3-ibeat is a diagnostic piece of software & cable. The software runs on a personal computer e.g. laptop. A cable from that computer goes to a connector behind the headlight on the bike. Diagnostic codes can be read and some basic tune up parameters can be set. That product is 'expensive' $700 to over $1000 I think. There is an iBeat I and an iBeat II (which is newer and more expensive), that is actually a complicated question at the moment.

If I made a mistake in the above I do apologize, but thought I should type something.

This is an incredibly advanced thread, it would be good to keep the basic questions in the future in other threads as to not dilute this one. I'd rather keep this thread open though.

iBeat & PC users please read this post

More experiments were done last night, I added this to post #1:
PC map changes also alter the AFR in the same fashion: going -10% on a map value will make the AFR 1.0 (ish) leaner e.g. 12.7 -> 13.7

That is an incredibly important piece of information, especially when viewing the map files.



The following only applies to the 2008 bikes, it may apply to the 2009 also, further research would need to be done, you can do that yourselves by downloading the 2009 efi maps and see it the Dynojet created maps are non-linear near 0% throttle at lower rpms
Of equal (or greater) importance: The rpm ranges are broken up into groups of 250 - 1500, 1750, 2000, 2250.

There is a huge discrepancy between those rpms table values at 0% throttle. The bike runs much leaner at 1500-1750 than at 1750-2000. If the ibeat FB1 value on this bike is set up for perfect operation at an idle speed of 1700 then the rest of the rpm/throttle range will be far too rich on this bike. If the FB1 value is set up for perfect operation for 1850 idle then the rest of the map will be not as rich. This non-linear operation of AFR is further shown on the maps created by Dynojet for the 2008 bikes which you can download from their site.

So if you are tuning up a bike using ibeat you may want to strongly consider setting the idle speed up toward the higher end of the specified range before picking a FB1 number.

Symptoms of having the FB1 value set with the idle speed at the low end of the range would quite probably include flameout at lower speeds, and most certainly low mpg.

Obviously some of this is speculation and would need to be confirmed. The best method of doing that would probably be sharing the PC V maps that were created with the Auto Tune after some period of time... or if I had the resources, which I don't at this time, then I could dig far deeper.


The 2008 TE250 test bike that the PC V and Auto Tune have on it will have some further testing by the owner. Riding in the dirt, possibly an organized ride of some type and probably a map could be shared for education and other purposes. After that the efi work on my end will almost certainly be terminated. I wanted to get the PC V with Auto Tune going on the 2009 bikes, at least 1 2008 early ecu bike, and evaluate the performance of the Auto Tune. The Auto Tune has been shown to eliminate the need for iBeat for tuning purposes, so people that live far away from dealers have some solution if they need tuning, and do not want to buy the expensive iBeat system.

While all that work has been done, this is just the beginning of a long journey.

That is correct!

After doing all the experiments, driving to Vegas 2x, working with Dynojet directly - if I owned any 2008 or 2009 efi Husqvarna bike I would order the PC V & Auto Tune, and I would be happy spending that money after tuning up the bike.

All PC Vs sold for the 2009 Husqvarnas are physically identical to each other, they only differ in the map installed in them - which will be quickly over written by the Auto Tune when riding.

The 2008 and 2009 bikes are physically the same as far as the PC V & auto tune modules are concerned, a PC V for any of the 2009 bikes will work for all 2008 & 2009s.

Personally I'd just zero out the map cause the Auto Tune will find your happy place, where ever that may be.