BMW 540i - Rebuilt exhaust system to the rebuilt V8 for ethanol fuel

This is how the rebuilt 4-liter V8 (M60) sounds with the rebuilt special exhaust system. The new special exhaustsystem has slightly modified original exhaust manifolds, a big single fullflow calatylic converter for 500hp, dual 2,5“ pipe catback including modified 2-disc Car Chemistry inserts (cc-inserts) and a big straight thru silencer with 3,5“ tips. The exhaust system is wrapped with 3 layers exhaust tape, from the exhaust manifolds to the cat. Info about this rebuild BMW V8 engine: Rebuild to 100% ethanol (E85) operation. After a 1.6 mm face milling of cylinder heads is the compression ratio now 12.5:1 (original 10:1). Completely rebuilt fuel system for higher fuel flow and pressure. The fuelsystem has now installed BOSCH EV6 injectors, that flows 42 LBS/HR (436cc/min) with E85 fuel. Original fuelinjectors flow 19 LBS/HR (191cc/min) for petrol. Fuel pressure set to original 3,5 bar (51 psi). It has a old engine optimization for Shell V-Power petrol. The motor contr