1st ty for having a great place to get help and find info about our cars.second I've tried searching and cant find a answer.I have a 07 g35x with hr motor has ported upper and lowers,lond tube cai,long tube headers,invidiaq300 exhaust,catch cans and im tuned.Problem im having is both my bank 2 oxygen sensors are stuck at .280v and make no changes.i used a volt meter to test all wire and all checks out even the sensors themselves are working if I use my volt meter to read them.but according to my scan tool there is no change.my question is could my tuner have done something wrong and made it so only my b1 sensors read.I would ask him but its been over a year and I've since lost his info any help would be appreciated im about to put it back to stock tune and start over. Please help this is driving me nuts