Acceleration is plentiful and continues to build throughout the rpm range. RENNTech claims the modifications are good enough to propel the 3,300-lb Coupe to 60 mph in roughly 6.7 sec. I think that's a pretty fair number.
Braking was responsive, but an upgrade may be considered in light of the additional horsepower. RENNTech offers a couple different brake packages, from a moderate stock upgrade to rotors as large as 14-in. front and 12-in. rear, augmented with four-piston front/rear calipers.
The addition of the RENNTech suspension and sway bar components pays huge dividends when the car is pushed hard in the corners, providing better stability and less body roll, while still retaining an uncompromised M-B ride quality.
Many of the aforementioned RENNTech items (excluding a new widebody package) may be obtained for less than seven grand, still well within the reach of the ever-growing C-Class customer.