Okay here's the deal. Up to 75-80% throttle my engine runs ok. When i floor it the engine bogs and loses power and even preignites. In higher gears its even worse at WOT. I know its running lean but i'm not getting any code 44's or anything like that and it usually runs nice and cool (i have a 160 thermostat). I've heard it could be my EGR. Any suggestions?

 

Sounds like onr or both of your secondary metering rods have fallen off the hanger and are permantnetly stuck in the well, at max lean....

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