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what are you guys with the 20's running for pressure? i have an -03 with stock 17's that calls for 35 max, which is where i run them. i have 20's from the f150 arriving today with the scorpion atr's. i know they hold 44 psi max, but not thinking i want my teeth to fall out!! i was guessing around 38-40. i dont have a new expy o the lot here to look at the door sticker. thanks in advance.
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2003 Expedition: 5.4L, Harley supercharger, 4lb lower pulley, c&l plenum, k&n panel filter, LFP SBTB, FTSP, removed front cats, Magnaflow 3" catback, Bilsteins, Eclipse AVN-5510, white face gauges, cobalt c2 boost gauge, 331 rwhp, 432 rwtq (dynoe'd w/20's, 17's back on now)
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