Go with HD, there's is backed by lots of development and actual testing, not to mention the regen distance is vastly higher when compared to stock or SFT. There are also detailed comparisons done besides a seat of the pants comparison that shows SFT lacking, not to mention less soot produced is...
Yes it is stored in a garage but before the winter front, didn't matter if it was in the garage or not it would throw the CEL and electronic throttle error. After sitting outside at work for a couple hours it would throw the codes. Seems others have had water drained from the intercooler after...
Live in western Wisconsin so routinely see stretches of below 0F temps. If temp is below 20 I keep two of 4 flaps closed and when it's below zero I close all 4 flaps. Seems to have fixed my issues with cold weather
Not a great solution but ever since I put on the winter front I have yet to receive the service electronic throttle message and check engine light. Before I put the cover on I got the message numerous times in the first 1000 miles with the truck. Have over 6000 miles now and haven't had it...