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| NEW! Technical Info: 4th Gen DRIVETRAIN Technical discussion of fourth generation (2007.5 and up) 6.7L engine and drivetrain questions, solutions and upgrades. For trucks with the 5.9L engine use the appropriate 3rd gen forums. |
06-29-2018
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Senior Member
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Join Date: Mar 2005
Location: El Lago, Texas
Posts: 290
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boost?
picked up a new '18 yesterday w/ 68RFE...noticed at hwy speeds 72-75mph & 1500-1700 rpm the factory screen shows virtually zero boost pressure...doesn't seem right is that typical?
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'03 2500 4x4 6sp SLT QCSB Charcoal, Black check Ranch Hands/running boards, tool box, Nitto 305s, clearance lamps, aFe, Banks 6-gun, High Ram, Exhaust, trans temp, auto meter 3-gauge dash pod, Fast Coolers, 10" sub, and hide-a-way 2.25" ball
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06-29-2018
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Senior Member
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Join Date: Nov 2006
Location: Blackwell,MO
Posts: 638
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Floor it for a minute and see what it reads then.
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'01, 3500, DRW, 4x4, QC, leather, 345,000mi, BHAF ,3.54, Dana80/60, 47RE auto, MWFI VP44 at 112k, FASS Titanium 150, Banks Power Elbow,
4"Monster exhaust, Ranch Hand Legend frt bumper, silencer ring MIA,Cooper AT3s, Timbo's APPS, Spohn Trackbar upgrade, HellBent Steel DSS, 50hp Maxtorq Injectors.
Mopar 52122362AH Steering upgrade
30' Damon Escaper 5'er 12,000#
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06-29-2018
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Senior Member
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Join Date: Mar 2004
Location: Tennessee
Posts: 8,463
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I don't have any boost pressure at that speed either. The KW shows 20psi boost at that speed.
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01.5,Red QC Sport SWB,HO,6spd,4x4,cowl hood, Drag Comp,4"ex., fuel press. gauge, boost&pyro gauges, bhaf, single Holley lift pump next to the fuel tank/13psi WOT, Vulcan Big Line, cheapo fuel cooler, Amsoil in the trans. & Valvoline in the pan, 62-65-.70A/R, ARP studs, kevlar/ceramic SD clutch, jammer 100's
Time to turn so's you don't burn.
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07-03-2018
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Administrator
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Join Date: Mar 2005
Location: Irricana, AB
Posts: 8,114
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My '03 usually runs 5ish psi cruising empty.
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2003 QC HO 6SPD, 305/555, 4WD, TST Controller W/monitor, fuel pressure guage, 100% Amsoil
sold
'96 2500SLT CC LB 2WD, KDP tabbed,100Hp Maxsticks,16* ,3k gsk,afc modded,#8 tst plate,62/70/13 turbo,4" MBRP exhaust,AFE stage III dry filter intake,autometer boost pyro, oil, tran temp,DSS,rebuilt diff & tranny w/billet triple lock TC w/lockup switch,1tn rear cylinders,ride rites on all 4 corners w/on board air,465k km. 330 hp 766 ft/lbs
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07-03-2018
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Senior Member
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Join Date: Mar 2005
Location: El Lago, Texas
Posts: 290
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my '03 would run 8-12 at hwy speeds and hit 20 climbing grades
this '18 barely hits 10 with my foot in it uphill and runs along at hwy speeds with no visual boost unless, shows a little accelerating from a stop
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'03 2500 4x4 6sp SLT QCSB Charcoal, Black check Ranch Hands/running boards, tool box, Nitto 305s, clearance lamps, aFe, Banks 6-gun, High Ram, Exhaust, trans temp, auto meter 3-gauge dash pod, Fast Coolers, 10" sub, and hide-a-way 2.25" ball
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07-06-2018
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Administrator
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Join Date: Jan 2004
Location: GOLDEN ,COLORADO
Posts: 19,636
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Quote:
Originally Posted by streeter
my '03 would run 8-12 at hwy speeds and hit 20 climbing grades
this '18 barely hits 10 with my foot in it uphill and runs along at hwy speeds with no visual boost unless, shows a little accelerating from a stop
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You have an VGT actuator problem. Probably stuck. |
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