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Discussion Starter · #1 ·
I started to watch the fuel mileage on my 04.5 and with a large single on it and 200 hp injectors i am getting around 9 mpg or so. I dont drive it alot (1700 miles last year) but was wondering will a set of twins increase my mileage or do i have a issue with the motor? I plan on pulling the injectors and having them tested and doing a compression test on it while they are out. So any ideas on what is wrong or is that normal?
 

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Discussion Starter · #4 ·
being that you have a lot of mods and you dont drive it much i wouldn't be surprised that your only getting 9mpg because your probably always putting your foot in it. If you want to check to see if its hurt i would do a leakdown test on her.
i think for the most part i have out grown the driving like a idiot stages and blowing smoke everywhere.
 

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Discussion Starter · #6 ·
But it's got upgrades, aren't you supposed to push it hard? Lol
Fuel mileage will be worse with a big single. More likely then not it will take more effort/fuel to get the big single rolling
Believe me I have pushed it hard I sled pulled with it every weekend for 2 years straight but now it just sits in the garage so i need to detune it and drive it more or fix it if there is a problem and sell it and let someone else have as much fun as i did with it
 

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Discussion Starter · #8 ·
how much of a increase should i see if i changed the turbine housing to a .90 instead of the 1.10 that is on it?? and i am runnig a s472 with 225 sticks, large cam shaft and decompressed pistons if any of that helps
 

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Discussion Starter · #10 ·
I had to take. 050" off the pistons in order to clear the cam
 
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