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Message: <blockquote data-quote="Hellion94" data-source="post: 226378" data-attributes="member: 8471">Actually, with that many turbos, all feeding off of one cylinder and not into each other, you would actually create LESS boost due to the strain on the engine. It doesn't matter how many turbo's you have. You would actually be able to create more boost from one large turbo than you would several smaller turbos. The only real reason for doing twin/quad/ whatever turbo setups is efficiency and quicker spool, which you eventually lose anyway at a certain point.If you have one big turbo, and you create 30 lbs. of boost, the turbo will need to be large enough to create 30 lbs. of boost and support the horsepower that it would be making. Now with this will most likely come a considerable amount of lag time. To remedy this, you can use 2 mid-sized turbos that can create the same or similar boost numbers, but since they are smaller, the lag time will be reduced, effectively increasing the efficiency.Now with a compound setup, the turbos would actually be feeding eachother air. A turbo doesn't know that the air coming into it is compressed or not compressed, it's only job is to take that air and compress it further, same with a positive displacement supercharger, or centrifugal. by feeding any one of these air that is already compressed, the turbo/blower will then compress it further, while only working hard enough to compress it at maybe 10 psi. The result is incredible amounts of boost, with incredible efficiency rates.</blockquote>