What does Si mean for the Honda Civic?

Si is an abbreviation for Sport Injected. It is used to designate the high-performance version of the Honda Civic. The Civic Si was first introduced in 1984 and has been in production ever since. It is typically equipped with a more powerful engine, stiffer suspension, and larger wheels and tires than the standard Civic. The Civic Si is a popular choice for enthusiasts who want a sporty and fun-to-drive car.