What WILL help you with throttle response is a "Sprint Booster", unless you already have one that may have been installed by the previous owner. You probably already know that our cars are drive-by-wire (the throttle body is opened and closed with the input of signal(low voltage)from an electronic throttle device, not a mechanical cable like the old days). The Sprint Booster steps up the input, and in turn, the speed of the response from the TB. Anyway, there is plenty of info. on this if you click on Search and enter Sprint Booster. You'll see and read how it works much better than I've explained here. Additionally, there are a few other modifications you can install to help your performance, unless they've already been accomplished by the previous owner. Again, use the Search here in the Forum for additional mod.'s. to your NA.