weird surge
ok guys maybe you all can help figure this out.I have a 99 f-350 7.3 4x4 auto with bullydog chip and i have a surge or a miss.it does it when it is getting upto speed and while at speed. It shows no codes and does not affect fuel mileage or power as i pull a pretty big GN trailer. but it feels like it is missing or surging getting up to and even while at cruising speed but it will run smooth when you really get on it so could this be the TPS or fuel water separater maybe .I have changed the fuel filter and cleaned and charged the air filter any help appreciated thanks
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