the car has a new lt1 in it.i was getting code 44 and I replaced the oxygen sensor.now no ses light and it stumbles at idle.it has a slight miss then touching the gas.injectors,all throttle body sensors have been swapped.no vaccume leaks that I can detect.no exhaust leaks.maf looks like one resistor is bent a little?gas millage is crap.idle jumps around sometimes from 1000 to 1200.egr is good.connected a vaccume pump and it moves.im running out of money and patents with the car.it acts like a bad egr at idle sometimes but that is not the problem.i do not have a live feed to see what the sensors are doing.any help please