Does anyone get a weird noise under your car when your vtec kicks in? Especially in 1st or 2nd gear? I hear a weird popping type noise (not sure how to better explain) when i'm changing gears from 1st to 2nd or 2nd to 3rd, usually when accelerating hard. Also, when vtec kicks in, is it normal to hear an intermittent changing or pause in your exhaust note after getting a new cat back?