ATS GM Injector Nozzles

Stage 1 - Mild upgrade, works well with tuner, exhaust, intake. Recommend FASS pump. These are known to improve fuel economy.

Stage 2 - 600hp capability, requires Triple Shot CP3 and FASS pump.

Stage 3 - 700hp capability, requires ATS Twin CP3 kit.

Stage 4 - 800hp capability, requires ATS Twin CP3 kit, and ATS secondary Fuel Supply kit.

Stage 5 - 900+hp capability, requires ATS Twin CP3 kit, and ATS secondary Fuel Supply kit.

2004.5-2005 LLY:

Stage 1 - Mild upgrade, works well with tuner, exhaust, intake. Recommend FASS pump. These are known to improve fuel economy.

Stage 2 - 500hp capability, requires Triple Shot CP3 and FASS pump.

Stage 3 - 675hp capability, requires ATS Twin CP3 kit.

Stage 4 - 775hp capability, requires ATS Twin CP3 kit, and ATS Secondary Fuel Supply kit.

2006+ LBZ:

Stage 1 - Mild upgrade, works well with tuner, exhaust, intake. Recommend FASS pump.

Stage 2 - 500hp capability, requires Triple Shot CP3 and FASS pump.