Join Date: Nov 2006
Location: Moses Lake, WA
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It's your Exhaust back pressure valve closing to aid in warm up. It is normal for it to come on at steeding cruising speeds also. You can unhook it. It will set a code in the computer but it won't turn on the check engine light. If ou look below the turbo on the turbo pedistal in the front their is a two wire plug, unplug it. this will disable it from actuating. Mines been unhooked for 2 winters now (1-winter unplugged 1-winter completly removed valve fom housing) and have not noticed any difference in warm up time.
99.5 F-250 PSD AT 4x4, 4in lift, 37 13.5 18 Pro comp Extreme A/T's, S&B Intake, GTP38R, DP Tuner custom programs (140 Agg., 120 sled pull, 80 tow and 60 tow), Rosewood DIY stage 2 injectors, BTS Trans, 5in exhaust no muffler, 6 oh intercooler, Ford AIC, EBPV delete, Foil delete, T/C lock up mod, Pusher Fuel Pump, Three Chime train Horns
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