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Overall (LF4 powered ATS-V, CTS V-Sport and CT4-V Blackwing)
- All power adders and modifications allowed.
- All fuels, additives, ethanol blends and methanol injection allowed.
- Weight reduction permitted.
|Intake Mods||Fuel Mods|
|IN||Intake and/or air filters upgrade||OB||Octane boost or race fuel mix|
|TC||Turbochargers upgrade||EB||Ethanol blend fuel > E15|
|TB||Throttle body modification or upgrade||MI||Methanol injection|
|IC||Intercooler upgrade including interchiller or ice box||LP||Low pressure fuel system upgrade|
|HP||High pressure fuel pump (HPFP) upgrade|
|FC||Fuel cam upgrade|
|NO||Nitrous oxide injection|
|FI||Fuel injectors upgrade|
|Ignition Mods||Cylinder Head Mods|
|SP||Spark plugs upgrade||VS||Valve springs upgrade|
|CH||Cylinder heads upgrade|
|Exhaust Mods||Drivetrain Mods|
|EX||Exhaust system modification||HS||Torque converter upgrade|
|FD||Differential upgrade and/or final drive gear ratio change|
|Suspension Mods||Tire Mods|
|TA||Trailing arms upgrade||DR||Drag radial tires|
|DS||Drag slick tires|
|FR||Front runner tires|