Do a search for tuning. Not much you can do with the base Model short of larger air intake and custom exhaust (like Corsa). The V’s have been successfully tuned, lots of info on this site, just use the search function.
That explains it. Yes I do have something behind my mirror. Now I know what that is. I bought the car a little over a year ago with 38,000 miles. I love it. So much fun to drive. Added a Corvette rear sway bar that bolted right up and it handles like it is on rails. I guess the next step is the intake and exhaust. thanks for your advise.