they r going to go in the computer and richen it up because it is running lean causing it to pop is what they said but i tried putting a fuel controller on it and it done nothing so i don't think what they r doing is going to work but will just have to wait and see
More than likely your throttle position sensor, or TPS for short, was not set to the right location or has loosened and moved. Fuel controllers are the best way to fix the issue, especially the Powercommander. It allows you to add fuel on decel to remove popping without effecting a hot start issue. The powercommander software actually allows you to see the TPS posistion and change it if necessary. Todd at Hunterworks.com or Tinken would be the best people to talk to about them.