Honestly you can't go wrong with any S550.. I've driven them all and wouldn't trade my EB for anything. It's different and offers as much performance as I could ever need for a street car. Just have to find what packages you want a go for it. You won't be disappointed.
If you are looking to max out performance with the EB then I would recommend the change. My father has a 15 V6 with a tune and bolt ons and the car is very quick for the street. Is it as fast as my EB.. no.. but he bought his car as a good daily and that's what it's used for and does great. If...
Normal driving in the country I avg 25-26 mpg with tune when not getting on it often... have pulled 30+ no problem on highway
A tune and IC are the first things you should even consider purchasing for your ecoboost. A tune especially from adam at MAP is the best bang for the buck and will...
Best time stock was 5.8
Best time with unleashed tune was 5.2
Best with tune and catless downpipe is 4.9
All runs were done on the same stretch of road with Temps 50-60 deg. Launched at 1600-1800 rpm with decent amount of wheel spin.
Base EB auto with wheel and tire package.