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Hi from way down under!
I've got a pretty much stock 2002 F250 4x4 Crew 140K(brazilian built right hand drive) which has had a low boost/low ebp/low power problem since I got it. MAP sensor showing boost under load is of about 4-5 psi half throttle and max of about 12 at wot(MAP 26), EBP also max of 36, but no black smoke. Only getting the one code P1247 after each run in truck, no CEL. Tested for boost leaks, none found. I have replaced - turbo with aftermaket one(bigger wheel, ats housing, stock turbine, Turbomaster wastegate controller), up pipes with IHI bellowed ones, MAP and EBP sensors, filters and oil. EBP tube is clear, fuel pressure at the bowl is ok 61 idle 57 wot, icp and ipr are within range.
It's just pretty gutless/no pull. All ideas appreciated
Did you install the Turbomaster yourself? Is the adjusting nut cranked down all the way? Any chance the wastegate is stuck open?
2002 F350 4x4 Crew, coolant filter, 6.0 tranny cooler and ext. filter, pre pump mod & filter, Isspro pillar pod, EV-2 hpop & fuel pressure gauges, AIS, Marinco x2, door seal mod, netbook mount for AE.