Technical Car vibrating/puffing exhaust

[JockyEvo]

Just noticed today while sitting idle at traffic lights that my car was intermittently vibrating - enough for me to feel sat in the cabin - have no problems moving off and while on the move, just this worrying feeling while stationary.

Briefly recorded the sound the car is making. Video below is of my phone next to the exhaust while the car is stationary. you can hear it kind of puffing and i have no idea what it is.

Can anyone advise? (would be typical as am trading the car in on Saturday)

 

[jamesdt]

mines had a bit of vibration but not the asthmatic exhaust apparently cleaning the throttle body and doing a relearn will fix it could be worth a try.........what engine is it might get a bit more help mate

 

[JockyEvo]

mines had a bit of vibration but not the asthmatic exhaust apparently cleaning the throttle body and doing a relearn will fix it could be worth a try.........what engine is it might get a bit more help mate

it's the 1.4 sporting mate. I went out in it again on a short journey and it was back to normal.. so not sure what's going on or if it's just in a bad mood?!

Guess I'll find out in the morning...