that’s the direct injection system at work! They all sound like that. Cool new ride. If you’ve seen the solstice forums they are pretty decent with a MBC and a partial tune until the ecu kills all the fun haha
Forgot to mention get to 1500 miles asap. Ecu limits boost to 15 lbs I wanna say before that. It runs the whole 18 or 19 after that I believe. Factory no lift to shift and launch control are fantastic as well, pretty sure that’s only available in “competative” mode