2008 CTS 3.6l manual

I’m just trying to get a little more speed out of this thing, it’s spins tires no problem but racing anything with a turbo even from a dig is starting to get pointless, but I love this car and want to keep it. Any suggestions?

I’m just trying to get a little more speed out of this thing, it’s spins tires no problem but racing anything with a turbo even from a dig is starting to get pointless, but I love this car and want to keep it. Any suggestions?