hey all
ok i'm starting to get annoyed
my car does an on and off burbling coming out of the exhaust, obviously coming from somewhere else
its basically: drive for half an hour, everythings sweet. then for no reason the car will start this bobobobobobobobobobobo soft burbling(think 4 bob's per second) its not robbing power or making it any harder to drive but it's quite annoying and you can see that the whole car slightly shakes along with it, had a water bottle sitting on the floor and was watching it vibrate along with the noise.
it dosnt do it during normal driving but when i come to a stop it does it while idling and also under really slight (0-5%) throttle
at first i thought it was a tunability problem as i havnt had my PFC retuned since tuning and was told its good for it just to iron out any prolems every 3 or 4 months or so.
*EDIT* forgot to mention (but thought it was obvious anyway but just in case) after a certain amount of time, say half an hour burbling it will just revert back to normal and drive fine for another amount of time and so on and so on
what is causing this?