Hand calculated using dic gallons used and trip meter.
That may be your way of hand calculating but that's not what I know of hand calculating to be. The only thing you look at in a hand calculating method on the DIC is your mileage.
But even the mileage could be wrong with the larger tires due to rotation ratios being off.
Get a tuner of some type to reprogram your ECM tire size. This may help alot.
__________________
'06 LBZ
18,000 miles to date
PPE hot +2 e.t (Jan 22,2008) sold on Jul 29,2008, EFILive (July 29,2008), egr block plate,pyrometer and boost gauges,Line-X bedliner, power step, matching door handles (Escalade), billet grille, clear braw to prevent rock chips, led tail lights, high intensity headlamps, two 10" subs, rockford fosgate 1000w amp for subs 5w-40 synthetic engine (Feb.17,2008), 75w-90 synthetic differentials (Feb.17, 2008), fuel additive (Feb.23, 2008)
I am getting 13 mpg with basically the same setup- cclb 6" fabtech with 315's. Haven't ran my Edge juice/attitude long enough yet to know what to expect from it, nor have I towed much wieght yet. I was really hoping to get up to 15 mpg- maybe after exhaust and cai??? Hope so- I guess we have to remember- with this setup, these trucks are massive!! Does anyone know about how much this should wiegh?
Weighed in at the scales yesterday with 1/2 tank of fuel.....6870 lbs.
__________________ Byron
2005 liLLY 4x4..... ZF 6 Speed , no muffler, lost kitty, Autometer C2 Pyro and Boost Gauges, EGR Blocker Plate, PCV Re-route, Resonator delete, By-Pass Dual Filtration, Amsoiled front to rear, Fumoto Valve, Texas Ranger CB. proud to be an American!! 106,000 MILES and counting
1999 Park Avenue 36' 5ver
2002 Hart 6-Horse GN
2 Welsh Corgis and 1 Aussie Shepherd
I got a gps and came to find out that my speedo was off a couple mph which came out to be 30-40 miles at the end of a tank. My stock 245's are 29.5 in. tall, but I have to tell my triple dog that they are 31.75 to make my speedo read right. It made my mileage end up being better than I thought it was. I weighed my truck at the landfill where I work with 3/4 tank, it came in at 7200#.
__________________ +2006 White Silverado LBZ, CC/SB 4x4, PPE Standard, Autometer Phantom Boost and Pyro, MBRP 4" turbo-back w/ 5" SS tip, S&B cold air intake, EGR and turbo resonator blocked, DieselSite coolant filter, Transgo Jr. w/ Amsoil tranny fluid, Amsoil in the motor
+Lowrance XOG gps, B&W turnover ball & Tow n Stow, 265/75/16 Hankook ATM RF10's, OEM style running boards, Husky floorliners frt/rr, backup camera, LED 3rd brake light, white face dash gauges[/color]
I get around 19mpg empty, and with the load pictured to the left, going from western Mi. to Missoula, Mt. i got around 9-10 mpg. Hit the scale at just over 21,000 pounds.
__________________ 07 classic crew cab long bed 2wd
3.73 rear, stock tire size
bully dog w/outlook ,bully dog cold air and 5 inch turbo back, with 6 inch tip.
replaced stock tank with a 55 gallon aftermarket tank
5% tint on all windows, and "eyebrow" on front windshield.
I have juice w/ attitude with the correct tire size put into the programmer, but my speedo is also a couple mph different from my monitor. i had the 285's put on before the edge and the dealer reprogrammed the computer. they told me they could only get it so close. does anybody know why.
I am geting about 19mpg cruising 70mph, also a 6" lift and 35's, hand calculated, speedo is GPS verified. I think the tuner/intake/exhaust made all the difference.
__________________ 2007 LBZ 4x4 Crew Cab Long Box
Trailmaster 6" Lift
20" Moto Metal 955's
35/12.50/20 Copper Discovery STT's
AFE Stage 2 Intake
AFE 4" Turbo Back Exhaust
Bully Dog Tripple Dog w/ Outlook
Westin Platinum Series Tube Steps
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but that's not what I know of hand calculating to be. The only thing you look at in a hand calculating method on the DIC is your mileage.
, no muffler, lost kitty, Autometer C2 Pyro and Boost Gauges, EGR Blocker Plate, PCV Re-route, Resonator delete, By-Pass Dual Filtration, Amsoiled front to rear, Fumoto Valve, Texas Ranger CB. 
proud to be an American!! 
Linear Mode
