I have an '07 Tahoe with the Volant PowerCore intake added, no other mods. This has added some power and a more aggressive sound to it which I like. However, I was driving home yesterday in the mountains and was following a guy who was just poking along. We got to an uphill portion and a passing lane opened up, so i stomped on it to pass him. While I was wide open there was a popping/snapping sort of noise from the exhaust. It is kind of like the sound you get from a straight pipe motorcycle when wide open. Kind of hard to describe. Anyway, has anybody else experienced this? Is this normal, or is there something wrong? TIA