After a bit of help, Just had a custom 3" s/s exhaust put in including dump pipe from Liverpool exhaust. great job, a bucket load more power after about 2000 rpm. The problem is if I keep the boot in up the hills to much, for some unknown reason the engine drops off all power. Is this what is called limp moad? I don`t have a egt gauge so no idea about exhause temps and it is not chipped. Just a 2011 model 3l common rail manual. Any help would be appreciated.