When i accelerate my car literally sounds like a wet fart, like someone is blowing a raspberry. I have looked at the engine and where the exhaust attaches to the engine it will not close up on the right hand side (as if you are looking head on at the car). I have had it taken apart and some exhaust putty put in around it and the seal, worked for a while like literally 15 minutes driving and then it is back to making the fart sound again. The left hand side tightened up very well but the right hand side still had quite a Significant gap. I have taken some photos but it wont let me upload them