project subaru legacy 2005 swap wrx 2007 I tell you that I swapped my legacy 05 to wrx 2007, to which I modified wrx electronics, vf22 turbo, 565cc pink sti injectors, Aem 320 gasoline pump, stainless steel headers, 3-inch stainless steel downpipe to the exhaust, ogura multi-disc clutch, box 6th fa etc. but the air conditioning was not working and the odometer shows the temperature at full (Er Hc) I turn to you in case anyone knows how to solve this issue

I mean there could be a lot of issues but i would start with the cooling system. Im going to list some steps from easy to hard so you can start easy:

1. Bleed air from coolant system
2. Change coolant
3. Check thermostat
4. Check water pump

AC could be completely unrelated, or it could just not work because your coolant temps are too high.