When turned on sounds and smells like it’s running rich. Also I fixed a boost leak I had on the intercooler piping. Any recommendations/tips to get it to perform better? (Mods you’d recommend)

Recently installed a black market parts fuel pump stage 3 on the car.

Car feels like it lags to put down the power but can hear the turbos spooling, also recently got a fuel mixture code when stepping on it in drive