This calculator will work out a new elapsed time based on a nominated horsepower increase. It is a good tool when evaluating the result that a performance upgrade will provide.

elapsed timeyour current elapsed time on the 1/4 mile
weighttotal weight of vehicle and driver, ready to run
additional hpthe additional flywheel horsepower from the engine
new elapsed timethe new elapsed time on the 1/4 mile
differencethe difference in seconds between your current et and new et
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