I believe its a V-5 SQ G-Trim, its a blower that is designed to support 600whp. Anyway, I'm wondering if these blowers make a rattle noise at around idle and once again at higher RPMs? I've never really delt with a blower car but I believe before, it was pinging, I could feel it pulling timing so I got off of it, ran the fuel down, filled it back up with BP92 (Iowas highest street octain) and octain booster along with some fuel system cleaner and I cleaned out the intake filter (Dirty as all everliving hell). I can't feel it pull timing anymore but theres still a constant rattle above 6000rpm that isn't a heatshield or anything banging. So I'm thinking its either the engine or the blower itself. Can somebody set me straight?

Thanks!