Okay guys so here is my problem.. I recently put in hpfp fuel pump internals and everything was running fine with my catless downpipe/racepipe, TIP, CAI, and hypertech tune. The other day I was driving and realized my turbo sounded different so I popped my hood and my vacuum line was broke off so I got a somewhat decent fitting that will work until I get home from school. But now when I'm driving my car will randomly just start jerking and my stft will drop to -25 but my ltft won't ever go higher then maybe 11. I was thinking it was a boost leak, but if it was a boost leak it would be positive correct? Also on a cold start my car will jerk really bad and almost make me stall... Any ideas on what I should do/look for. Has this happened to anybody?