I have a 1995 325i. It started acting up about a couple of weeks ago. It was throwing out the O2 sensor coed so i changed that.. Now it's still throwing it and it's still runiing like ****. Whenever I step on the gas, it just barely responds and does not accelarate at all. It feels like it was bogging out. I have changed the MAF sensor already and the O2 sensor. I took it to a shop and they are trying to tell me that it might be a clogged catalytic converter. (which i also told them) and now they are tryin to charge me 1600 to change it. Now the car is stuck at the shop because it won't start at all. It cranks but just doesn't seem to want to start at all. PLEASE HELP!