First off the car ran fine last year. I added a new throttle and longtube headers this spring. I am not just getting around to tuning the car. Car idles fine until it goes into closed loop. At this point, the A/F jumps to 16 or 17. It will stay consistently there. If I take it for a drive I get no more then a block and it starts running out of fuel. The A/F jumps to 19 and then reads lean. I restart car and it goes back to 15 or so. Now I am trying to datalog and it keeps wanting to say that my TPS is registering at 2.000 and jumps around from there. The MAF voltage runs around .55 and doesnt change according to idle. These 2 were registering fine yesterday. Now I go to turn the key forward and the darn thing wants to check for codes. I have no clue whats going on. I have checked for my grounds and everything is attached.