You haven't been charged with any offence. You have been reported. They can change the offence if they want. You have now been sent the notice of intended prosecution for Dangerous Driving.

Seems strange that you would be reported for dangerous driving if you just quote "gave it some gas". I think you need to be more specific in relation to exactly what happened. Traffic law isn't exactly my specialist area but I do know more than most and i'll help you out if I can.