[quote=“turbo ls1 ss,post:10,topic:35279"”]
sequential turbos
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Compound Turbo Charging (One turbo compressor wheel feeding the other) is not the same as twin turbo charging. A compound turbo utilizes different sized turbos feeding off one another to do the job of one turbo. Air enters the low-pressure turbo (the larger of the two) and is fed into the high-pressure turbo (the smaller of the two), then directed into the engine or intercooler. This is why this type of turbo charger arrangement is referred to as Compound Turbo System. Compound Turbo Chargers work in series.