With the TTS and a proper MAP there should absolutely be no need for some fuel adding device like a Throttlepack. IMO, the Throttlepack is a waste of money when you have a tuning device that is LIGHT YEARS ahead of it. I would suggest that you talk to Steve at Fullsac and see if there is something he can suggest to solve your throttle lag issue, and the decel popping. Running some V Tune runs will likely solve the problem, or in a worst case, taking it to a tuner that is good with the TTS. The V&H Throttlepack is nothing more than a device that operates like changing the jets out in a carburetor and is akin to working on your bike with a pair of channel locks and a screwdriver when you have a full socket set and torque wrenches.