Harrop E9X M3 TVS Supercharger

Harrop E9X M3 TVS Supercharger

E9X + M3


The BMW S65 is an awesome engine. Race versions run 8,700+ RPM and shift at redline to extract every bit of power. In that environment, BMW's high-revving V8 excels, but in daily driving, it's harder to appreciate the power potential of this engine - without getting in trouble. For a street car, we want to hit the pedal and go, and we don't always want to drop a gear or two first. And while BMW may not have been previously known for making massive power, the automotive world is changing, cars are faster, and we like big power in a modified BMW, too!

In the USA and Australia Mustang drivers, hot rodders, and top fuel dragsters have known how to make power for decades - big screws ramming air down your engine's throat.  More recent centrifugal superchargers are easy to package for installation in a snug engine bay, and are easier to configure with an aftercooler to reduce intake temp which is always a factor in forced induction, but they lack the immediate grunt and bottom-end power of a positive displacement kit.  

Enter Harrop, via Eaton, by way of Australia

Positive displacement addresses the low-end power weakness of the S65 engine but is difficult (read incredibly time consuming and expensive) to package, so centrifugal is the only option? Nope! Thanks to Harrop Engineering, a 60-year veteran of the automotive performance industry from the Land of Oz with experience reaching into their native V8 Supercars all the way to F1, the difficult to impossible packaging hurdle has been overcome! And they haven't just "made it work" - Harrop leveraged their work on OE Ford and Lotus supercharger kits to give the BMW TVS Supercharger Kit true OE appearance and fitment - BMW would be hard-pressed to do better.
Harrop utilizes the Eaton TVS 1740 supercharger which produces quick response and monstrous acceleration, yet maintains completely civil driveability. While other systems on the market have trouble developing a plenum that delivers the proper cylinder fill on BMW's S65 V8 due to the difficult layout process, Harrop's plenum design highlights their masterful work, ensuring equal amounts of air to every cylinder. Harrop's electronic bypass valve is a world's first electronic boost control for an aftermarket positive displacement supercharger kit, and it assures perfect and proper boost is always on tap.
Key Features
  • World's first positive displacement supercharger for S65 engine
  • World's first front inlet front drive Eaton TVS 1740 supercharger
  • Latest intercooler system technology
  • Exclusive plenum design for proper cylinder fill
  • Unique bypass actuation control
  • OE appearance and operation


Harrop E9X M3 TVS Supercharger
Harrop E9X M3 TVS Supercharger

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