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Re: Winter Operation
Its your Exhaust Back Pressure Valve........its normal......goes away once the oil temp has reached something like 150 degrees. Yes, it hurts performance a little. Its designed to help the truck get up to running temps faster. It also acts as a warning to me not to get on it until it has quit. Some disconnect it, but not me. Its there for a reason.
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1999 (early, 10/98) F-350 Supercab 4x4 6-spd DRW limited slip....Drk Tor. Red
4" exhaust, EGT guage, Severe Duty AIS Filter
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