Cummins x15 low boost after delete

[DDT LLC]

Hey guys 2019 w900 had a bad delete in it had it redone by someone I trust and after the delete was redone I chased a 5v low voltage code found it to b the differential pressure sensor mounted on the cans which are gutted but I unplugged sensor and my code was fixed sent truck out over weekend and it returned and drive says it runs smoother but can't get over 21 psi of boost before the delete was redone it would push easy 45 which really bothered me so my question is would un plugging that sensor screw up my boost I wouldn't think so otherwise do u have any ideas for me to start no codes at all but it does sound like a hiss noise from the pass side like a boost leak but I can't find a leak any help would b great I'm down to 3.7mpg on this weekend trip it went out on