My car is paralyzed in Open Chat Posted December 27, 2010 · Report reply I've had my car back a few days now and baby is she ever driving sweet. Smooth shifts, power has fully returned, oh it's just great. Turns out, I do not need a new cat. I scanned my car at work yesterday and the only code that came back (other than the ignored FTP sensor codes) was just that my upstream o2 sensor was putting out high voltage. So, just order a new Denso sensor from Amazon, pop it in and it's runnin like new.Even without that my fuel economy has skyrocketed back to it's old numbers. I was getting 18 MPG at the worst of it. Upon last check it hit 24 MPG when my dad filled it up and with this most recent tank that I haven't finished yet, it looks like it could be getting 30+ MPG.Aside from the o2 sensor, all I have to worry about at the moment is the alignment. It's pulling to the left.