Fuel injection in NASCAR

[3] Starting in the 2012 NASCAR Sprint Cup Series season, carburetors have been officially replaced with fuel injection - making the technology legal after 55 years of being "outlawed.

[4][5][6]" The first race in NASCAR Sprint Cup Series history to use fuel injection was the 2012 running of the traditionally carburetor-friendly Daytona 500; which took take place on February 26.

[10] Outside the NASCAR racing circuit, the American automobile manufacturers would make the final two models to run on carburetors: the 1990 Oldsmobile Custom Cruiser and the 1990 Buick Estate Wagon.

[10] Restrictor plates, however, will remain in the series for an indefinite period of time[4][5][6] because major accidents at Daytona and Talladega made it necessary for a device to slow down the vehicles to half of their normal horsepower.

The fuel-injected NASCAR Sprint Cup vehicles may run slightly faster than their predecessors, also making new challenges for the restrictor plate manufacturers.

[14] The stock car racing organization has a special authorization code that keeps hackers away from tampering with the vehicles using workaround programs.

[4][5][6] The ability to download information from the electronic units of the cars will play a role in the elimination of tandem drafting that has hampered NASCAR in recent years.

[15] NASCAR Sprint Cup races can start in temperatures as low as 50 °F (10 °C) without making the vehicles suffer through major engine problems.

[22] Dale Earnhardt Jr. was responsible for accomplishing the one-millionth mile under fuel injection as he was leading lap 34 at the 2013 Bank of America 500.