Why would you remove the Lambda sensor, ie put the PU in, and run open loop with the JD Power Surge 6X ? My bike has this setup with the air restrictor removed and runs GREAT ! Kurt
most people went to the pu before the jd kit id assume? someone would have to talk to james to see if his software is designed to interact with the lambda sensor
It doesn't interact with the sensor. The ECU does. The JD tuner adjusts the ECU's output signals to the injector.
That's a good point. Having a closed-loop can really save fuel when motoring along at mild or steady-state throttle. The JD can still provide a nice fuel boost when accelerating or going hard. But it makes little sense to run the motor too rich when you're just cruising along. I might put the sensor back in during the winter and check it out. I'm not really satisfied that my fuel mileage has dropped so much.
I called JD and asked the same question. I was told to put in the resistor, but didn't get in to why. I also didn't speak to James. I'd like to know more.
I asked that question...the reason to use the PU kit is that is how JD tuned their device -- their setup 630 had the PU kit installed.. If you use their device without our PU kit, you'd be on your own to figure out good settings. Since the JD is so easy to play with, I'm going to try it anyway.
That's a bit disappointing. I don't understand why someone (anyone) would want to render the FI to an open system. Sure, you can change settings but . . . part of the attraction of FI is it's inherent (closed-loop) ability to adapt to change. I just rode a KTM ADV 950 (yes, I bleed Orange but also have a sweet handling Husky) from Frankfurt to Ulaan Bator, Mongolia. That bike confronted rain, 115 degrees in the Kyzl Kum desert, 15,400' in the Pamirs and single digit temps in Russia and Mongolia. It was just luck that the bike ran okay across that range. Anyone with FI (closed-loop) didn't even think about it.
I did speak with James regarding the lambda and resister scenario. He said his tuner would not work right with the lambda in place. It would just loop the signal back to the ecu and not work properly. So basically install the otherwise know as "power up kit" so the JD power surge fuel tuner will work. The stock ecu has several functions and is able to make changes without the narrow band lambda in place.
