97 F250hd
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New User
Joined: Jun 2003
Posts: 24
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97 F250hd
This has a 5.8L engine, 180 thermostat and transgo shift kit.
It runs rich with the 180 stat but the mileage stayed the same.
Can you do a chip that will lean the engine out for 87 octane fuel?
Mileage not horsepower.
Thanks
It runs rich with the 180 stat but the mileage stayed the same.
Can you do a chip that will lean the engine out for 87 octane fuel?
Mileage not horsepower.
Thanks
Post Fiend
Joined: Jan 1997
Posts: 23,165
Likes: 18
From: Enjoying the real world.
Sorry... but if you're looking for mileage its really not the solution you need. Its very difficult to accurately give you the air/fuel ratio you would need unless we had the truck in front of us on a dyno or at least a dyno pull made by you that includes an air/fuel ratio graph. The reason is "rich" is too broad a term for us to go by. I need to know how rich, exactly.
