How much horsepower does a ka24e turbo have?

There's no single answer to how much horsepower a KA24E turbo has. The horsepower output depends entirely on the specifics of the turbocharger setup, supporting modifications (fueling, exhaust, etc.), and tuning.

A stock KA24E naturally aspirated engine produces around 100-110 horsepower. A turbocharged KA24E can range from roughly 150-250 horsepower (or even more with significant modifications), depending on the factors mentioned above. A very basic, low-boost setup might only see a modest increase, while a heavily modified engine with a large turbo, upgraded internals, and professional tuning could easily reach the higher end of that range or even exceed it.