Fat Duc O2 Manipulator

[billg69gmc]

First I've heard of that. I've got probably +6 thousand or so miles with the FatDuc on. No issues, heck I forget most times that I added it when someone asks what mods I've done.

[ProTeal55]

First I've heard of that. I've got probably +6 thousand or so miles with the FatDuc on. No issues, heck I forget most times that I added it when someone asks what mods I've done.

I don't have nearly as many miles on my scoot with the FatDuc on, but my engine light hasnt came on since the install of the FatDuc..

[dezoe]

If that's the line that runs from your O2 sensor then yes, that's the one.  I have an 08 S2R1K as well and had to re-route the line up and to the right of the rear shock and down the right side of the frame.  The manipulator control sits perfectly in that space between the cylinders. 

I should add that once you get it hooked up, there's a good chance your check engine light will blink on and off intermittently.  I e-mailed Jason at FatDuc and he said that has occurred during testing and appears to be a side effect of the manipulator and the ECU .  It usually comes on a couple minutes after you start riding and will stay lit for a few minutes before going out.  I've had it come on and off 3 or 4 times during a 30-minute period, then stay off.  Other times it doesn't even come on.  It has no effect on performance, so I just ignore it now.

Thanks for the info  Was your connector placed where mine is before you connected the manipulator? And why did you have to reroute the cable?

[Mike_D]

Yes, my connector was in that space on the left side.  I re-routed the line to get the manipulator out of the way yet still easy to access for adjustments.  You may be able to run it on the left side, but I think it left it more exposed when connected. 
     As for the check engine light issue, I guess the chance of it occurring with your bike is low depending on how rich you have it set.  Mine is currently set halfway between the richest and leanest setting; I may try to lean it out a little bit to see if it fixes the problem.  Here is what Jason at FatDuc wrote:

"Yes, we have experienced this during product development and in normal use.  The occasional check engine light is most likely due to excess carbon build up on the O2 Sensor.  Only a very small percentage of bikes (including mine) have exhibited this side effect when the variable trimmer is set towards the richer side.  Each individual bike is somewhat different due to normal manufacture's and part suppliers tolerances.  The carbon build happens after extended periods of idling or after extended periods of cruising.  It should go away after revving the motor and clearing of the sensor off with the hot exhaust gases.  One thing we learned when my Ducati tech was dynoing/testing the product is it does run a bit richer at idle than it does during normal operation.  He wasn't concerned about it, but you wouldn't want to let your bike sit and idle for long, long periods at a time (30 - 40+ minutes).  You could try to set the variable trimmer slightly leaner to see if the CEL comes on less frequently, but you want to make very small adjustments on the trimmer and ride for a couple of days.  You'll want to find the leanest setting on the O2 Manipulator that still eliminates the surging and other lean fueling problems."

Good luck and let us know how you like it once you get it hooked up.

[dezoe]

Got my Fatduc O2 manipulator in the mail  tuesday - man that was fast! 2! working days from order to delivery in Sweden   Installed it right away and rode with 'factory settings' (mine was set at about 13.4:1) for about 70 miles on tuesday and wednesday. Huge difference! It was totaly ok between 3-4k rpms - before it would stutter like crazy. It was even rideable down to 2.5k but with some stuttering. Plus exhaust pops were almost completely gone.
But... today the stuttering was back, and the pops - not as bad as before but .. 
Is this 'normal' (has this happened to anyone else) - and does this mean I should go even richer?

Edit: ..and by the way, no 'check engine light' with the Fatduc so far

[ProTeal55]

The past two days every once in awhile when I start the bike the engine light will come on after about 5 min of riding. If I shut the bike off and restart it the light is gone ?