Well duh if your o2 sensor code popped it could be the front one went bad...and yes...that would KILL MPG's.
I must say Nick - you are really improving. At least you didn't just come right out and call the guy a dumb@ss.
-Swash
I'm sorry, I can't hear you over the sound of how awesome I am...
2004 IBM/Black/A4 GTO -- 1 of 273 - and the slowest
2002 Galaxy Silver GTP - a few mods - sold