Thanks for the input. With the additional fuel being provided I can now run 6th gear at 60 mph with no problem at all (even on hills). While I have only put about 300 miles on the wide-band sensors so far it seems to me the bike hits peak RPMs (each gear) sooner. I guess it's the improved throttle response that the Xied provides.

 

'10 SG - 3000rpms at 80 also. That's not really too high of rpms. I jump up to 4-4500 when passing cars or really havin fun. Lol

 

I had to go look this thing up because I never heard of it. Not to mention the fact the Delphi ECM in our bikes doesn't support wide band O2 sensors.

I assume this is it?

NAMZ NR-FL-XIED-10 02 Enrichment Device for Harley-Davidson Touring
http://www.nightrider.com/parts/

That's not a Wide Band O2 sensor. It's some type of resistor that plugs in between your stock narrow band O2 sensor and the ECM. It apparently alters the O2 sensor voltage to fool the ECM into richening the mixture to a fixed AFR value in closed loop. (i.e - fool it from running 14.6 to running 14.0)

And no, it's not going to effect your gearing which is mechanical and can't be altered by anything electronic.

 

Buddy's '11 FLHX is right at 3,000 RPM at 80 MPH. You're good.

 

Yep...OP misspoke. XIEDS are just a middleman telling the computer to add fuel, as the computer is reading engine temps at "cold".

~Joe

 

HDThunder, thanks for the explanation on how those things work. I'd always wondered.

 

Yep...I love mine.

MPG was unaffected. 43 MPG on average w/ my style of riding.

My 103 never goes above 200 now. It is a combination of the following:

1. oil cooler
2. full synthetic oil (Mobil1 15W50)
3. XIEDS
4. Klockweks mufflers (less resistance)

So nice.....runs warm, not HOT. 60-65 degrees out with lower fairing doors CLOSED...still doesn't overheat...not even close )

~Joe

 

From what I read I don't think this device is fooling the ECM into thinking your bike is cold. If it did that the bike would never go into closed loop and would be forced to run open loop all the time. Plus it's only changing the O2 sensor voltage and not impacting any other sensors. The O2 sensor is like a battery and generates it's own voltage in a narrow range of .2-.8 volts. The ECM takes this voltage and translates it through it's programming and VE tables to a target AFR in closed loop. I think it does nothing more than take whatever voltage the O2 sensor is sending and lowering it by a fixed amount. Lower voltage is leaner (in this case a false reading created by this add on device) so if the ECM sees lower voltage it will add more fuel to achieve it's target AFR. Therefore the ECM would be fooled into adding more fuel.

Here is a real good write-up explaining how a Lambda sensor actually works.

http://www.picoauto.com/applications/lambda-sensor.html

 

When I purchased my 2010 SG almost 2 yrs ago I was new to Harley's. I thought that it being a "torque monster" that riding it at 2,000 rpm was right and it seemed to be fine without lugging. I have recently changed to keeping it between 2,600 to 3,500 rpm's. It's like a different ride. Especially in the canyons. I found that my gas mileage went form 41mpg to 39 to 40 mpg not much difference and well worth it. If you look at a performance chart you can see that the bike makes most of its power in the 3k range. Let it Rev!

Stage 1 Tune, Stage 1 air filter and SE slip on SuperTrap muffler with one extra disc added

 

yes, 3000 rpm at 80 mph. your mods would no affect those numbers