Re: Gas milage help!!!
Your absolutley right, pre cat o2 sensors monitor and adjust fuel trim but when the post cat sensors are not in the picture it puts the system into open loop operation and runs in a base fuel model which is always rich mixture.
__________________
1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
|