Nightrider Technical Notes

131/151 Explained

Posted by Stephen P Mullen on 10/1/2009 to HD Tech Notes

What do the 131/151 codes mean?
The codes are specifically listed as P0131 and P0151 codes. The description in the Service Manual is:
P0131    Front O2 sensor low or engine running lean
P0151    Rear O2 sensor low or engine running lean
The key point to look at here is "O2 sensor low" when analyzing what is happening with the XIED's in place.

2007 and Later Harley-Davidson Engine Performance

Posted by Stephen P Mullen on 10/1/2009 to HD Tech Notes
There is more independent proof that you do not need to remap the HD EFI when installing mufflers. The March 2009 (page 66) Cycle World dyno tested a set of slip-on mufflers on an '09 FLH, getting 5% more HP and 9% more torque on a "bone-stock, including EFI mapping" bike.

FAQ

Posted by Administrator on 10/1/2009 to HD Tech Notes
FAQ for Nightrider XiED products
Information
Browse By Category
Browse By Price
New Releases
Top Sellers