i have a 99 mustang 3.8l my check engine lite came on today i had a computer hooked up to it and it tells me bank 2 running lean where do i start looking to remedy this problem i had a brand new fuel pump and filter installed about a year ago so i dont no what it could be also my exhaust is to low to the ground i have a strait duel exhaust 2.5 in no H or X pipes someone had on when i bought the car a ****y job 2 becuse it sit's 4 in down from the body and i have exhaust leaks so im going to buy some shorty headers and the pypes x pipe and cat back anyways i bottomed out my exhaust yesterday could this damaged my o/2 censor maybe ?