Team, the 02 sensor was indeed in the exhaust.......
And as far as the LTFT's, if adding an airbox is going to lean them out further, it seems like a lose, lose situation......
As, the car is making as much or more rwhp, as any '01 stock i have seen.
What would be the advantage of installing the box, and then having to add a MAFT, and 30# injectors??.
They stock injectors are running right at 17Ms @ WOT.....over 90% duty cycle.
Can you see an appreciable power gain for the $$$$ to gain I would pick up??.

Thanks