I have a 2000 gsr. nothing is really done to it yet i am saving for a massive over haul. I have the second o2 sensor out and have a simulator hooked up to it. yea when the car is driving it seems like something is pulling on the engine taking power away from it...does anyone have any idea..i have swapped spark plugs and i am doin the wires soon too...but a friend told me when he rode around with no o2 sensor in it doesnt really fuck anything up, just puts a check engine light on..please help