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Sportster
What is the best XIED product for my Sportster?
The 2014 Sportsters use the 12mm Delphi 4-wire heated O2 sensor used on the Twin Cams. We are recommending the FL-VIED-10 for the 2014 Sportsters at this time.
We recommend the X14iED for general use on all 2007-2010 Sportsters. This provides the best all around performance.
We recommend the XIED for general use on 2011-2013 Sportsters. Harley-Davidson made programming changes in the ECM resulting in slightly better results for these bikes with a bit more fuel.
The 2007-2013 bikes will typically both get excellent results with either X14iED or XIED. The primary recommendation is based on small changes in the HD ECM and Nightrider technology for managing the additional fuel it adds to the engine. Few riders would notice the difference in fuel mixture if provided in a controlled environment (lab rat anyone?). But there are always a few hearty souls who want that extra degree of tuning we have learned, and we provide it too you.
For Riders that want to experiment with fuel mixtures, the VIED allows a range of fuel mixtures from 14.3 to 13.7:1. This is our recommend alternative to the X14ED. It gives you the chance to try the 14.0:1 and 13.8:1 AFR's, making the final setting based on your riding style.
For Riders with a Bar Hopper riding style (in town), the XiED can be used. Its slightly richer fuel mixture than the X14iED is well suited for in-town riding, but not high RPM, high speed riding.
Contrary to popular belief, richer is not alway better, only richer. For normal cruising in closed loop, there is a diminishing return as the fuel ratio gets richer than 14.2:1. The X14iED is set at 14.0:1 which as proven to be an excellent all around fuel mixture, especially when taking into account the adaptive nature of the HD Delphi ECM.
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