As time progresses, more and more electronics get implemented in cars. In most cases, this includes driver nannies that take away from the character and how fun a car can be. Fortunately, it's not all bad, as engine management and other electronics continue to improve as technology gets better. This opens up more HP, better tuning options, and more versatility to get your car to where it needs to be. Ultimately, the most important part of your build is the tune. It doesn't matter which parts you're using or how well everything is assembled; without a tune, you simply don't have a finished working car.