The RB26DETT engine is a powerful and robust 2.6 liter twin turbocharged inline 6-cylinder engine produced by Nissan. It is capable of producing up to 500 horsepower with minimal modifications, and can be further tuned with turbos, intercoolers, exhausts, intakes, and computer-controlled engine management systems. Suitable for various performance applications, the RB26DETT engine is a great choice for those looking for an engine with high power output and excellent tuning potential.