accleration

i have noticed my c32 has devloped a fault . when doing 95-105 mph (obviously not on uk roads) my car makes a funny jerk and wont build any more speed wheen i put the pedel to the floor . this does not allways happen , it seems to be an intermediate fault. i have only 500 miles ago had a...

After my car has just had its "secondary air injection valve" changed the car doesnt seem quite as nippy as it did before it all started going wrong? When the car was working as well as it ever had i could floor it at 5mph when the lights changed etc and the car would drop down to 1st and feel...