This is by far the most infuriating trophy in the DLC Pack. This requires you to destroy all 14 bombs across a single Detonator event (that's one each lap). It's recommended that you build up the EMP as often as you can to max to ensure that you don't miss the bomb when it appears. The bomb is very easy to spot (It's the giant spiked ball; kind of like a Bouncer bullet from Ratchet and Clank)
Now what's so annoying about it is that even though the announcer usually gives you a fair amount of warning as to when and where it appears, sometimes it will seem like it doesn't appear at all. This is because sometimes the bomb will spawn right as you pass it, and sometimes the announcer will not even bother to announce it, usually when it spawns right at the start of the lap which is incredibly annoying.
Do NOT do this on a track with split pathways for obvious reasons. Some people say Syncopia is the best track to do this on, but Mallavol is by far the better option and one a fair amount of naysayers will recommend, as it is both fairly easy to survive and a lot easier to spot the bomb earlier due to its fairly straight track design and in general is a lot fairer with its spawn points, not to mention there being more EMP pads available to fill up your EMP
It's still pretty annoying though, and can still be subject to randomness, so don't get too down if it takes more than a couple of tries to get it. I know it did for me :|
Good luck, and don't get too annoyed like me! :|