WHILE DRIVING HOME, I NOTICED SOME NOISE THAT OUNDE LIKE A TURBO NOISE AND LOOS OF POWER. I PULLED OVER IMMEDIATELY SHUT OFF ENGINE AND POPED HOOD. LOOKE UP AND SMOKE FROM ENGINE. OPENED HOOD AND SAW SMALL FIRE ON REAR PASSENGER SIDE OF ENGINE BY TURBO HOUSING. SOON THE TRUCK WAS TOTALLY ENGULFED BY FLAMES.