Honestly if the truck is a 550 just leave it alone...
Some of the new flashes Ect don't seam.to actually net anymore power on the dyno
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08 f-250 reg cab 6.4 resurrected wrecked work truck 11.23@124 fuel only 7100 lbs 62mm vgt / 86mm elite 200s, dual fuelers, Trans, no limit intercooler pipe 305/50/22 toyo proxes
2012 f-350 6.7 tow pig, amp steps, bmf/atz, transferflow tank ect
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