Volvo d12 no power help

2007 volvo d12 auto trans did egr delete overhead oil rings air fuel filters and seems something is choking engine empty trailer takes 1 min to get it up to 65 mph hour on flAt road can anybody help please? No codes

 

Volvo D12 EGR Performance kit | EGR Delete Kit | OTR Performance I did delete 3 months ago it was ok wasnt diff but no more check engine so 2 weeks ago no power last week run overhead change oil ring fuel air filters oil filters no difference took load to fl on my way back to ky empty nd im on 75 all flat land dont see no reason why i couldnt do 70 mph without problems look like its struggling nd chocking

 

So what can i do to close it 100% i check valves they was in closed position i hammer them down just to make sure and i only blocked two pipes for coolant didnr do nothing for exhust i tgought when i unploged egrs nd hooked computer that would kill power to egrs do they not functional

 

I did when i installed this kit but how do u close egrs 100% what else i could block buddy of mine had working egrs when he installed this kit his truck pulls 30% better than it used to more power better fuel millage mine no difference

 

I might just do that cause my cross over pipes exhust part still get hot which means exhust still flow through them