G'day guys Was out driving in Cairns the other day when I saw a NA citric acid XR6 in the rear view mirror. Now, I took notice because I have a citric acid XR6T on order which is supposed to arrive on the 26th of Sept. :D Once it caught up to me, I wound my window down to have a listen and noticed it was a manual. Now the thing is he was trying to get around another car (keep left unless overtaking, d******d) and his car seemed to be backfiring. Now I have never heard of this as a problem, anyone got any ideas?