new member looking for help and advice

[drewvic]

hi there to you all

have for the first time become a audi owner

have just perchased a audi a3 1.8t Quattro 2002

looking for any help and tips to watch out for with these and a little question to ask regarding the car itsel

when at stand still and rev the car all is good sounds perfect

when you set off and start to drive the car it sounds like there is a loud blow in exhaust, but obviously there isn't otherwise you would hear this when the car is at stand still and reving and y help much appreciated