I've been trying the new orion one in my car for a bit now. Very impressed with it. Has not overheated indoors on a 5.5 or 6.5 and it doesn't have a fan or heatsink
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The way the power is put to the gorund is great and the brakes have the car doing endo's!!
Still have nosram in my 2wd
Only downside is the price. See what she does outdoors