1 definition by DB from MO

Top Definition
The act of adding up individual horsepower gains from bolting on crappy JDM parts to your Honda
Hey dude, my Honda Civic is really fast now. I got an additional 6 horsepower, 3 from that JDM intake tube and 3 more from the JDM air filter.

Man, nice JDM math, but you car still sucks.
by DB from MO July 26, 2008

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