Better tow rig
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Tuned
Joined: Apr 2007
Posts: 454
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Better tow rig
I have a 6.0 diesel so the 6.8 is foreign to me. My buddy has a 6.8 and wants it to give him a little more power towing. Right now the truck is stock and he is not getting very good mileage towing his toyhauler. What kind of upgrades could he do to make things better. Gears, tuner, exhaust, intake??????? TIA
Elder User
Joined: Jun 2009
Posts: 663
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From: Elk River, MN
my 08 with 4:10's has a hard time breaking into double diget mpg. I once got 12.5 on a trip from mn to Il empty. Gears then a tune for a 99. It is just a thirsty beast. good friend had a 99, he out 419,000 miles on it too.
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Tuned
Joined: Apr 2007
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So would 4.10s help quite a bit?? And what kind of tune?? With the gears is he going to notice any mpg increase or just better power?? Also what is the best tranny cooler he could run to help with tranny temps??
Elder User
Joined: Jun 2009
Posts: 663
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From: Elk River, MN
mike at five star is your best tuning source. Not much of anything is going to improve the mpg. Lots os thread about gearing around here. For towing a lot of weight any gear is going to beat the 3:73. I would stay lower then 4:30 as 4:10 is not going to be huge change unless he running big tires. Smaller diameter tires is also an option vs a 2500 dollar gear change. Towing @ 70 mph I get 6-8 mpg depending on the wind. Thats at 22450 pounds GCVW.
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Tuned
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Elder User
Joined: May 2008
Posts: 574
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From: SW Idaho
Best bang for the buck is a tune from 5Star...you will get 3 custom tunes from Mike, Call him.
If towing you want 4.10 to 4.30 depending on your tire height.
I run his Eco tow tune all the time.
If towing you want 4.10 to 4.30 depending on your tire height.
I run his Eco tow tune all the time.
Elder User
Joined: May 2008
Posts: 574
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From: SW Idaho
My 08 has a factory CAI and the exhaust manifold is improved over eariler years.
New User
Joined: May 2011
Posts: 13
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My '09 Lariat got 10.4 mpg towing a TT out and back to western KS against a heavy headwind and then up and down CO Rocky Mountain NP. Added an Airaid CAI and have a
Flowmaster II catback on order. Would love to break into the 11's+ or 12 even.
My speed was generally 65-75 mph.
Flowmaster II catback on order. Would love to break into the 11's+ or 12 even.
My speed was generally 65-75 mph.
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