no power

Hey guys hope everyones mazdaspeeds are not breaking ever week like mine is. anyway I've found that my speed has lost a lot of power. normally around 3000-3500 rpm the car pulls really well and honestly is amazing. i found about 3 days ago the car doesnt hit any sort of power anymore around that...

ENGINE/DRIVABILITY Year/Make/Model: 2013 mazdaspeed 3 Mileage: 141000km Location: montreal, QC Concern: No power, enters limp mode(flashing CEL) when trying to accelerate into boost DTC's: p0401(egr is deleted), p0300, p0442 Modifications stock sized intake(sure and cobb), autotech hpfp...