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    Engine Altitude And Horsepower Drop Questions....

    I have not done a 0-60 run here yet as I am living in a much more urban area now but at sea level the fastest I personally did it was 5 seconds flat (though I have seen as low as 4.3 seconds from a stock 5.0 manual). I wouldn't be surprised if it was about 6 seconds now. If I do a pull anytime...
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    Engine Altitude And Horsepower Drop Questions....

    Did the intake and tune make it feel similar to @ sea level, or still noticeable difference? In 6th gear (manual) at 70mph it's at pretty much exactly 2000 rpm 75 is about 2100 rpm.
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    Engine Altitude And Horsepower Drop Questions....

    I have 3.55 gears right now but not sure I want to switch them actually, I like the ratios and I think 3.73s or even 4.10s will reduce my hwy mpg by a lot..but I'll consider it. And yeah I know the Axlebacks won't add horsepower but they sound so good I need them :)
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    Engine Altitude And Horsepower Drop Questions....

    Hi I am new here so my apologies if this is in the wrong section or anything. I have a '14 Mustang GT/CS Premium and just moved to Colorado from California for college. Having previously lived at sea level, the horsepower decrease at 5,000 feet is more significant than I expected. It is quite...