A turbocharger compresses the air before it enters the engine, which increases its density and allows more fuel to be burned. This results in more power. However, the increased air density also makes the air hotter, which can cause the fuel to detonate prematurely, resulting in engine damage.
Placing the carburetor after the turbocharger allows the air to cool down before it reaches the carburetor, which reduces the risk of detonation.
