On paper, it sounds like you're getting the best of both worlds. It almost sounds too good to be true, doesn't it? Suddenly, you get to have a cool-sounding engine that also happens to pack quite the punch. It's this overlap that produces the desired effect. Because of this, the intake and exhaust durations overlap. They do so by having a smaller lobe separation angle than most other cams. These camshafts provide a cheap and easy way to achieve the desired sound. Their solution came in the form of the Thumpr series.
That's when COMP Cams made use of this rising demand. For the longest time, you couldn't find a way around this issue. Even then, you'd have to fiddle with some of its parts to get the desired sound. Normally, achieving this would require you to own a very high-end performance engine. The main appeal of these cams is quite straightforward - it's the powerful rumbling sound they produce. Why Thumpr Cams might not be the best option out there.
