i add a 4lber, got a reflash, and filter now im putting out 385hp real wheel and 480torque. for a 99L what do you guys think?and can some show me where the o2 sensors are? pics. thanks

 

they are the only things sticking out the the exhaust tubes, they are between the trans cross member and the motor, they have wires coming off them and there are four, two on each side and one before the cats and one after..

sorry no pics

jim

 

Those numbers are very good for your truck, being its a 99.

Larry.