MSP keeps blowing BTN fuse

[Turbospeeed]

What exactly does the BTN fuse protect. And there is one more thing. The car keeps falling on it face (ignition cut off i think) once boost comes in (when floored). But if i gradually step into it, it runs fine. So at this point i'm lost as hell. HELP PLEASE!
(mj)(mp3yellow

 

[hornsfan10609]

You are hitting 'fuel cut' because of the stock tuning. You are right it is ignition cut but everyone on this site refers to it as 'fuel cut', it happens because the cooler weather causes the MAF sensor to max out 5v. An SSAFC will solve all the bs the stock tune causes by keeping the car in closed loop and reading off the MAP sensor instead of the MAF.
BTN fuse is for the Brake, Tail and license plate lights. The harness may be damaged and grounding out.

 

[Turbospeeed]

Thanks man, i'm look to buy the AEM fuel and Ignition controlor from protegegarage/ I still haven't found that damn ground out. But i went ghetto and just pulled the rear defroster relay, works for now I guess.