Why Twin Turbos Are Better Than One

There’s a big difference between twin turbo and sequential turbo sequential turbos are better than twin turbo. A twin turbo is simply one turbo per exhaust manifold, a sequential turbo or a modern Day turbo that allows it to spool up quickly and still put out the maximum manifold pressure will always be better than a single old style turbo. But there’s not always room for that. Kind of set up even in high-performance engine base.

Love this explanation very straightforward

Even if the few go with twin turbos when planning to use sequential turbos as for low to midrange has exhaust gases spin a smaller turbo as top end has gases spin a larger turbo when it isn't practical to spin a large turbo off a locomotive's prime mover to a cruse ship turbo.