Avoid the dynomax that come with the TTI’s I also had the drone from hell and picked up 2/10’s going to Pypes Race pro’s. Not quiet, but much better than the drone!
My TTI system, seem to stern, had a drone when the compression ratio was at 11-1 with Edelbrock heads & 1.5 rockers on top. Switched to Trick Flow heads and a 1.6 rocker arm and the drone is gone.
