hi all has anyone used a Tunit box and had any problems with it just taken mine off our 2.4 as it has just made mine start to shudder no its of its fine again. it improved the mpg and its Drivability
As an ex Alfa person, there is information on alfaowner about this. I suspect the box just altered the fuel pulses, and screwed up the DPF regen. As far as I know there are only 2 places you can get the DPF removed and a correct remap. Whether the DPF will be included in future in the MOT I don't know.
Look up AHM and Alfatune.