Big Valve Head
For Smart 700cc petrol 450 or 452 (Roadster)
It is recognised in the tuning community that standard heads from German car manufacturers are some of the best in the world, So any amount of porting will give minimal improvements (Less than 6% additional power).
Availability: 6 coming (But nothing in stock, Yet!)
The graph above shows the Big Valve Head with other upgrades (This graph is from simulation software. See disclaimer)
On this website i use outputs graphs from a simulation software. These graphs are for comparison only and should be used in that way. They all assume a standard engine in good mechanical condition and a Turbo that can generate 1.5bar of boost at whatever RPM is shown and at whatever engine load."THEY ARE FOR COMPARISON ONLY AND NOT REAL LIFE, THIS IS A SIMULATION ON A COMPUTER"