• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

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

bikesparky said:
Hi guy's, new to this forum but experienced with bike electrics, PCV and the lot.
For all who have issues with the autotune and PCV here is the following permanent solution.
What happens is that dynojet has been lazy and fitted the negative for the PCV and the negative from the sensors on the same wire to the negative on the battery.
Some bikes have this issue including the Husky (also R1 many others). You can check this easily by connecting you laptop to the PCV and iddle the bike. The TPS signal should be steady unless you actually move the throttle, on the husky it is not. Also have a look at the wiring diagram and the negative from the TPS and other sensor is NOT directly connected to the negative of the bike but to the ECU only.
Fix: Cut the black/ white wire going from the PCV to the negative of the battery, there are 2 wires in the little loom, don't cut the black just the black-white!
Now extend that wire all the way to the ecu follow the PCV harness to make it easier. Solder and heatshrink your connection etc...
Connect the extended wire to the black wire from the ECU with one of the left over wire taps in your autotune kit. The black wire is on the underside of the plug and disconnecting the plug makes it easier.
Refit everything and connect laptop and start the bike. Now you should have a rock steady TPS signal. Recalibrate the TPS signal and have another go at autotune. The results should be much better.
Click to expand...

Kudo's to BikeSparky. I have also seen some issues (on my 2010 TE250 with PCV and autotune) with my Throttle position (% throttle) running up on the screen with the bike sitting at idle. Often it would go up to indicating more than 20%, sometimes even to 100%. Blipping the throttle would reset it for a moment. I called dynojet but they were not very helpful. Googling did show this problem with the ground being a possible issue. At any rate, I took a couple hours today and re-wired the TPS connections. The original connections were made with pretty lousy connectors, this time I used a "Posi-Tap" for the TPS connection (the orange and black wire third from the end on the ECU). I picked up the TPS ground right where the wires come out of the TPS sensor on the throttle body, on my bike it's the solid black wire in the middle of the connector. I ran that to the black and white wire snipped from the PCV ground harness. To be clear, the PCV module has a two wires within a sheathed mesh jacket that you connect to the battery negative terminal. I carefully cut open that sheath and cut the black and white wire. The black and white wire stub on the battery terminal remains unconnected, insulate it well. The black and white wire from the PCV is now connected to the solid black wire (its the digital ground) on the TPS.

If anyone wants another reference to this issue, I found a good description on a ducati forum here. There is another reference to the issue here.
 
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