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Im outta ideas here. No loss of power no smoking on start up or idle. No smoking under light to moderate driving. Over 4500rpm its like the engine caught on fire bad drop rpm and smokes gone. Before this started happening i changed pcv valve and oil got changed to different brand. Swaped old...

He guys having a wierd lean issue. Scan tool with car off shows both o2 sensors functioning properly (by voltage) while cars running o2b1s1's voltage will sit at idle 0.000-0.005 while o2b1s2 will sit 0.415. Through a raise in rpm o2b1's voltage will not change higher then .0015. Osb2 will...