got xied for my 2011 48 and even tho i havent got to put many miles on it i could immediately tell the difference. only downside is i will more than likely be buying more fuel (good thing i got a nightster tank in the paint shop) and tires lol. just thought id post this if anyone was looking into xied. best $100 ive ever spent on a bike

 

Now add a high flow air cleaner and really watch the bike come to life .

 

I got the vied last week. And noticed an improvement in throttle response. My bike just feels like it wants to be rode harder.

 

Which one should I get for 08 nightster with heavy breather, V&H short shot, and fuel pack?

 

+1. Also the easiest mod on the market.

 

We recommend the X14iED for general use on all Sportsters. This provides the best all around performance.


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 X14iED. 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.

See them all HERE

 

Will this work in conjunction with a V&H Fuelpak or replace it? I bought a bike with it already on there and it still surges badly and runs hot.

 

when i got my 48 it already had the stage one screaming eagle high flow intake, v&h exhaust, and screaming eagle heads. i'm loving it