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Join Date: Dec 2009
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The air intake heater that he pointed at has nothing to do with the way the truck runs. A lot of people remove that assembly and either plug it or use a drilled and tapped plug as a source for their boost gauge. I wouldn't replace it. The one in the air box is used so I would swap that if it was biased. I'm sure it has some affect on fueling, although the engine oil temp sensor is the main input for that.
2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM