Thats right. Over in aussie they advertise the hypercharger as "bolt on horsepower" and I suppose that there would be some air flow increase due to the ram air effect. I 'd like to fit a pair of them to my America and hide them behind a pair of side covers so as to keep the bike looking like a triumph. So as I asked previously, How do I make a mirror image version of the right hand side cover? Any geniuses out there that can think of a simple method to do this please represent.