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My car runs a little rough and hesititates once it gets up around 190ish. it runs so lean, it burns your eyes when standing behind it at idle. after i drive it, my clothes smell like it. i have a 190 LPH fuel Pump, 24lb injectors... I just ordered MSD ignition, in hopes of making it run smoother and maybe burn up a little more fuel... now im thinking of replacing o2 sensors as well. i dont know what the situation is, what do bad o2 sensors cause the car to do. will MSD help my roughness? the car has ALWAYS run very lean. the rough at part throttle is fairly new.

-Craig
 
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