Gas mileage aWith Supercharger
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Joined: Oct 2003
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From: Delcambre, La
12 psi, Lightning motor, 4.56 gears 38X15.50R20 tires.. Stop and go town driving I get 10.5. the best I have been able to manage on the hwy was 13. The L bone stock got 17.
Last edited by brahmus; Jun 27, 2006 at 08:56 AM.
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Joined: Dec 2001
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From: South Mills North Carolina
Originally Posted by Jordan not Mike
No kidding!
For one tank, I wanted to maximize my MPG. I got 14...
Then I thought to myself, why the heck did I put all this work into it, just to baby it???!!!
Hence...10mpg.
For one tank, I wanted to maximize my MPG. I got 14...
Then I thought to myself, why the heck did I put all this work into it, just to baby it???!!!
Hence...10mpg.
to not use it ,no lower that 14.3 when playing with hemis so far.
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Joined: Jul 2001
Posts: 2,803
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From: North Canton, Ohio
I like the Roush, but there are several out there. Its your $$$ so you will have to make the ultimate decision. I am installing the Roush on my '04 5.4 Supercrew 4x4 in a week or so.
Mileage will depend on how you drive your vehicle. My '01 Lightning which made 495/600+ got 17-18 on the open highway. I drove it from my home in Ohio to Troyers shop in Virginia several times and realized that mileage. And my '03 Cobra 475/515 got 22-23 mpg on the same trip.
Mileage will depend on how you drive your vehicle. My '01 Lightning which made 495/600+ got 17-18 on the open highway. I drove it from my home in Ohio to Troyers shop in Virginia several times and realized that mileage. And my '03 Cobra 475/515 got 22-23 mpg on the same trip.
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Joined: Oct 2005
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From: Delaware
Originally Posted by madjay97
so can anyone give me an idea of the best charger to go for a 5.4 engine?
Well the Roush seems to be working out great for me. Not the most powerful but the best intergrated imho plus with a 3/36,000 mile warantee you cant go wrong. If you do go Roush pay the extra money and get the intercooler as well.
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Joined: Dec 2002
Posts: 1,558
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From: Eastern TN
Originally Posted by 97on37s
U shoud get better milliage with a supercharger. That is if u can keep your foot out of it.
Add parasitic drag, you lower MPG - you cannot get around that.
My best tank EVER in the Lightning was 17.4 MPG.
My '01 'Screw routinely got 18 MPG - much bigger and heavier truck too...
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Joined: Aug 2005
Posts: 103
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From: Michigan
Just came back from Carlisle PA after the All Truck nationals. Our 2 Powerworks/Magnacharger trucks (F150 4x4's one with 3.55's and the other with 3.73's) got a little over 17mpg on the highway. Which is really good since one of the trucks was NA going to the show (we installed a kit at the show) and got around 17mpg on the way there. Basically after the install there wasn't much of a change. Again, fuel economy is directly related to the right foot. The roots chargers we use are internally bypassed so there isn't much parasitic loss when the bypass is open, and as long as your in closed loop fuel control not much changes.
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From: The LBC (Long Beach, CA)
Originally Posted by mab351
The roots chargers we use are internally bypassed so there isn't much parasitic loss when the bypass is open, and as long as your in closed loop fuel control not much changes.
So when you aren't into the boost, the only extra drag on the engine is to spin the blowers, but they aren't producing boost so parasitic drag is low, and fuel efficiency isn't affected too much as noted by mab351
