I guess that poor monster V-Twin is so choked, it runs hotter from not being able to inhale and therefore needs its poor headers wrapped! Glad I got to live during a time ( before autonomous cars) when I could actually drive unassisted and unguided behind the wheels of some visceral cars.
Yes I always understood it was beneficial to cool (read intercooler) the incoming charge to increase its density, not heat it first as with this arrangement
