Car ran rough misfires stalled wont start

Just trying to get more solutions car recently had a jhm clutch and LW flywheel wheel installed and catless pipes plus OEM fuel filter. Got the car back from the shop the next day I went to start the car , car started ran rough would not idle and not rev. Car was misfiring very loud trough intake turned the car off then ran a scan and got codes for misfires on 3 5 and 6 , cam sensor and rich on left bank car had timing belt done 10 thousand miles ago. The car always had a left bank code replaced the coil packs on those cylinders and I started the car back up ran rough and stalled now car will not fire . Turns over Fine but battery will not hold charge any more , fuel pump does turn on . Took a look at the timing belt looks fine can’t see how it could jump a tooth belt is tight will line up timing marks next to see if timing is off please need anybody’s help cars a daily driver thanks 2002 Audi a4 3.0 6 speed sport package cold weather package Mod list - OEM full votex kit jhm clutch LW flywheel jhm catless down pipes jhm trans mount mil tech exhaust APR snub mount kn filter zingo air box mod votex spoiler roof spoiler 18 " TSW nardo rims carbon fiber interior trim hid 8000 high low beams