acelerating

i keep getting a rather low pitched clunking noise sometimes when i pull away in first or when i brake at a slow speed i.e. if im just doing a couple of mph on the drive and then brake NOT constantly from from a steady 30mph for eg. It sometimes does it when turning at slow speed too and i...

I have done a search on this so i know what the problem might be either N75 or N249. I have a forge 007 fitted and a cia so i can hear what the dv is doing quite loud when acelerating i can hear a whoooshing noise i know its not a split boost pipe because i can hear it ecoeing in the cia my dv...