Unless you are really into racing your car, there really isn't a need to go anything bigger than a K04 on our 4 pots. I just tried 100 octane with a APR K04 V2 tune and the car screams! 360HP and 370TQ makes a fine commuting car. I easily get 34-36 MPG on the highway. It really is the best of both worlds...

The APR kit is plug and play, takes out all the guess work, headaches and time. Time is a very important factor. If you have got time to get a custom tune dialed in by Maestro or a local shop, by all means do it. I think I wouldn't have time for a custom tune until I am retired haha!....By then we will be driving all electric cars anyways...

I am always a fan of having more options. I would say the biggest downside to the APR kit is the price. It would have been nice if they had kept it at it's original price tag of $2,600. I got mine on sale w/no sales tax, free shipping and I installed it myself. It could have been much more if I had paid a shop for labor. Most shops were quoting me 5-8 hours for labor @ $105 - $120/hr. If another aftermarket company comes out with a plug and play kit that is more affordable, then I think we might have a winner.