I have a 2004 sportivo and have been finding lately that a lot of the time when i go to accelarate the car tends to die a bit then all of a sudden it picks up speed again. Can anyone tell me whether or not the have a throttle control switch/modulator and if so could this be causoing my problem. If not can anypne opffer me some advise on what the cause might be and how I can fix it. Thankyou