Electric turbos - why so long?
Electric turbos - why so long?
Info from Underground Racing, and every single turbo manufacturer.
It's because the gas is still expanding due to heat as it leaves the combustion chamber, so it's pushing to take up more space which in turn pushes the compressor round even more than the gas alone would.
It's why ceramic coating manifolds and turbo housings improve spool time, it insulates to keep the heat in.