The factory released acceleration time is 0 mph to 100 mph in 4.1 seconds and the top speed is unknown but estimated at 165 mph. i have found in top gear at 6000 revs it does about 102 mph and it increases by 20 mph every 1000 revs - it definately goes faster than 165 mph but it is dificult to look away from the track at these speeds so i cant say the top speed...yet, i would estimate from experiance about 175-185 mph. These figures are in standard tune with the standard can and cams, the race can increases performance by 2-3 hp and increases the acceleration by about 5% but not the top speed to any great extent.