Help needed (Fuel increase for 7.5L)
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Joined: Nov 2012
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Help needed (Fuel increase for 7.5L)
I just bought a 94 F-350 with the 7.5L 460. I am currently getting 8-9 MPG whether I'm towing or running empty. I know I will never get great economy but 12 would be nice. Any Ideas? The truck was a one owner and only has 154K on it. Would straight piping it help or is there another exhaust that wold help? How about a chip? I ordered one from ACD tonight but will it hurt my motor. Any suggestions would help.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
What transmission does the truck have?
What size tires?
When was the last time it had a complete tune-up with plugs/wires/cap/rotor and filters?
Does the truck have two tanks? If it does have you checked the MPGs using both tanks?
What size tires?
When was the last time it had a complete tune-up with plugs/wires/cap/rotor and filters?
Does the truck have two tanks? If it does have you checked the MPGs using both tanks?
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Those tires are taller and wider than stock. Has anyone reset the PSOM calibration constant to compensate for the taller tires? If not then your MPG calculations will be skewed if you are basing off of the truck's odometer.
Do the tuneup yourself is the best methodology IMHO.
Do the tuneup yourself is the best methodology IMHO.
Posting Guru
Joined: Jul 2008
Posts: 1,250
Likes: 1
Start with a couple of these:
Six Litre Tune Up
ignition upgrade and timing bump (no 56K) - FSB Forums
Remove Intake "Horns"
https://www.ford-trucks.com/forums/1...air-horns.html
Project MPG
http://performanceunlimited.com/proj...ine_series.pdf
Six Litre Tune Up
ignition upgrade and timing bump (no 56K) - FSB Forums
Remove Intake "Horns"
https://www.ford-trucks.com/forums/1...air-horns.html
Project MPG
http://performanceunlimited.com/proj...ine_series.pdf
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