Ok this is strange.... So i was running forced open loop like 03lances for the longest time, i was running 15.2 highway AFR and was getting better gas milage, latly instead of around 300 miles a tank till the light comes on, i noticed light was coming on around 240ish.. i was like WTF?! So i watched my AFR's crusing and i noticed they were now around 13.2 crusing! This is the odd part... When i was crusing and let up on the gas pedal, normally when u let off the gas a little bit, there is less fuel and so reads a leaner AFR, not me, when i let off the gas a bit, the more i let off the gas the RICHER the AFR would be, i was able to cruise at 11.2 AFR before it read all the way lean (because i was at the "lightest" setting before the ECU cut the injectors). Normally if i had an exhaust leak it would read more than normal lean at idle and crusing. But at idle the car reads 15.2 and in my fuel maps the input value for crusing and idle is 14.9 AFR, btw both my high and low fuel maps are the exact same. So i dont think i have an exhaust leak. I changed it back to closed loop and the car ran fine cruising, (14.2-15.0 sweeping when cruising) any ideas??? so weird

EDIT:: Problem was a loose BOV