Compression Ignition Addict
Join Date: Apr 2010
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it measures axle shaft/carrier speed. which does not change with gears. the transmission shifts with mph. so if nothing was re-calibrated, the truck is running more rpms then the tcm is use to, its probably shifting too late and hitting the rev limiter.
2008 F-250 6.4 Auto, CC,SB,FX4, 2" lift, 285/65/20, Spartan tuning, Elite studs, Elite egr delete/wastegate, Elite push rods, Spearco Intercooler, cold side pipe,CFM, 4"down pipe,Custom 5" DP back exhuast 543HP/1231 ft-lbs
Everything from Sean at Street diesel performance
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