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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
For those that follow that are trying to decide between two or one I came across this from Garrett about single v double:

Quote:
What are the main differences between a Single and Twin Turbo setup?

Choosing between a single or parallel twin turbo setup is primarily based on packaging constraints in the engine bay, or a personal choice by the tuner. In most cases, for top performance, a single turbo is preferable because larger turbos are generally more efficient than smaller turbos. However, often there is not room for one large single, or the tuner wants the visual impact of twin turbos. The notion that two smaller turbos will build boost faster than one large turbo is not always accurate because even though the turbos are smaller, each one is only getting half of the exhaust flow.
TurboByGarrett.com - FAQ's
Old 01-16-2010, 07:22 PM
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