I recently replaced my Air Mass Sensor after my CE light came on (I ran the codes, thus giving me the error and by deduction, the needed repair). Once the car relearned (adaptation), the light went out after two days.

But... now when I accelerate hard, the supercharger kicks in then all of a sudden the car just bogs down hard to almost a stop. If I continue to drive the car it will accelerate, but it takes a long while to get it up to speed. It seems the supercharger won't engage.

Now, if i let the car sit overnight, it seems to reslove the issue until I put my foot into it. Then poor performance all over again.
I ran the codes again and came up with a P301 (or was it 300) and a P170. They were freeze codes as the CE light only came on for a half a day then gone. I replaced the spark plugs with new Bosh to see if I had a bad plug. Smoother idle, but did not resolve the issue.

Could this be a bad O2 sensor? What other sensors feed the computer that would cause this problem.

Thanks
Shawn

2000 C230K w/ 98000 miles