RPM's
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
I had a pretty good run last summer when I was consistently getting MPGs right around 20 at 70 MPH. My work requires me to make a 200 mile trip every week on the island highway (4 lanes the whole way). With the canopy off the truck did really well holding speed with hardly any effort on the pedal.
Fuel prices being what they were back then I certainly had good reason to try and get the most out of every last drop.
Might be able to do better this year as the engine breaks in some more. It seems to have stopped using oil last month.
Fuel prices being what they were back then I certainly had good reason to try and get the most out of every last drop.
Might be able to do better this year as the engine breaks in some more. It seems to have stopped using oil last month.
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Perfect. just keep the boost around 10 psi unless you are installing ARP head studs, then all bets are off....
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Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
I'm maxing at 10 right now since ATS put such a small compressor wheel on the 088 system. They designed it for best efficiency around 7 psi (didn't want their turbo kits to blow up the stock IDIs). What turbo are you using?
My IP is also a little weak so with more fuel I might be able to push the boost higher, but I'm trying to get a compressor upgrade in the mean time. With such tall gearing, the turbo doesn't do much for me when in overdrive. I'm hoping to change that.
My IP is also a little weak so with more fuel I might be able to push the boost higher, but I'm trying to get a compressor upgrade in the mean time. With such tall gearing, the turbo doesn't do much for me when in overdrive. I'm hoping to change that.
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deisele75
1973 - 1979 F-100 & Larger F-Series Trucks
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Feb 9, 2006 09:39 PM