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I don't know the answer to your question, but here's my take. I have an '08 V-10 with the Torqueshift Automatic and a 4.10 rear. I have towed heavy on 4 different occasions from Idaho to El Paso and back over those nasty mountains, and I never had a single ping. I have installed the Diablosport Predator programmer in the "middle" 91 octane tow/performance setting and this truck hauls balls. They also have a 93 octane, super performance setting, but I have kept it on the middle setting for over 25k of my 32k miles. No use in messing with success IMHO. This truck kicks butt and never complains and is easy on the pocket book compaired to a diesel. You might give the Predator a try.
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2002 F-350 SRW Lariat,4X4, PSD with too many goodies to list. 182k and a very strong 7.3. SOLD
2008 F-250, SC Lariat, 4X4,Shortbed, Pueblo Gold/black, V-10, 4.10, auto, Delivered on 9/7/07, great looking rig. South Texas bumpers front/rear, Air Raid Intake System, Diablosport Predator, Magnaflow, Husky's, JJ's, Ford alarm/remote start, Marathon seat covers, Sirius, PIAA, Access cover, Weatherguard tool box, Rhino liner, Michelins, Duraflap mud flaps, Escort 9500i, MagHytec rear dif cover.
2007 Lincoln LT (wifer's grocery getter),Superchip,Magnaflow duels, K&N dropin, Leer Browning Special
1996 Ford Bronco EB; almost stock
2007 Kubota 900 RTV diesel with goodies.
pappy's truck
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