Ok, so I decided to do a little playing around today and headed out to True Value and bought some stuff for a Open Air Intake. I bought two rubber couplers (1 to fit over the TB and one to attach to the PVC tube), a 60 degree PVC bend tube, and a cheap air filter from auto zone to just test it out. I drilled a hole in the PVC tube for my sensor then stuck it in there, then I attached everything to the engine and put the filter on at the end of it. Took it for a test drive. The first drive was about 10 minutes long around my neighborhood and everything went fine. The second test drive I got about 4 minutes away and a check engine lite came on so I headed back on home. Messed around with it at home, then drove around, including taking it on the Interstate to see if I could just blow something out but the lite stayed on. The car never backfired, even when it was floored or when I slowed down real fast. From what I have said so far, does anyone know what I can do to get rid of the Check engine lite? I was thinking it was the cheap filter but you know the stock tubing that comes with the car, I slapped it on the end of that and drove around and the lite never came on. So could it be the sensor, because I have it plugged into the tube, but it is exposed to the air in there directly. Any help or suggestions would be greatly appreciated because I have been at it all day. Yes, the diamater of everything is 3" and everything was sealed up tightly with clamps.