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In many parts of the world, diesel is a dirty word. We have to especially thank Volkswagen for that, but the truth is there are markets all over the world where compression ignition engines are still popular even after the famous Dieselgate. Germany is one of those countries where a powered diesel engine is still considered the best powertrain for a car that makes long trips on a regular basis. So it is not surprising that the local auto industry continues to launch new and improved diesel engines.
Even the tuning scene at Deutschland isn’t immune to working on diesel cars and Manhart’s latest creation shows what a modern six-cylinder diesel can achieve with a little help from the aftermarket world. Manhart took a BMW 740d xDrive and installed a self-developed ECU remap in combination with a turbocharger upgrade kit. The result is an output of 405 horsepower (298 kilowatts) and 582 pound-feet (790 Newton-meters) of torque that comes from the 3.0-liter inline-six diesel engine that sits under the hood of the luxury sedan.
The tuners also modified the vehicle’s eight-speed torque converter automatic transmission so that it can handle the increased torque. For comparison, the stock 740d xDrive has 320 hp (235 kW) and 501 lb-ft (680 Nm) of rev. Following the engine upgrade, Manhart gave the 7 Series diesel the MH7 400d moniker to reflect the increased output. The tuning specialist retains the original exhaust system, although upgraded pipes are available upon request. The same goes for the brake system.
Recognizing the Manhart 7 Series diesel from a stock car won’t be difficult. The MH77 400d sits 20-30 millimeters lower than the standard vehicle and sports 22-inch Manhart Venturi alloy wheels, wrapped in 265/30 R22 and 295/25 R22 front and rear tires. The body is finished in gloss black with contrasting gold trim around the edges of the rims, front and rear bumpers, and doors.
The interior is maintained almost to resemble its original form. The only two exceptions are the logo on the steering wheel where the rotating propeller is replaced with the Manhart emblem. Oddly enough, the gauges on the digital instrument cluster feature the letters Alpina surrounded by the brand’s signature blue.
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