IT just a little timing rattle nothing to worry about unless it starts sounding like a cummins! THe hypertech programer is real conservative on timing and power for that matter. THe ppe will get better milage because of the slight rattle  !
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Caleb
05 Reg Cab D-Max/ZF-6, Twin turbos, Twin Pumps, SBC Dual Disk
04.5 CC D-Max/Allison, Stock turbo, Modded Pump, Suncoast IV |