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That's still almost a 20% improvement.
One of the problems with something like the Tahoe is aerodynamics and weight. To overcome rolling resistance and aero at 70-75mph, you probably need 40-50hp just to cruise!
Best thing on a heavier and less aerodynamic vehicle is to keep speeds low...
As an example, 85mph in my Aristo (similar to GS300) is just about the same horsepower as 65mph in my wifes Mazda Tribute. Vehicles weigh similar, but aerodynamics are vastly different.
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1992 - Suzuki Swift GT
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