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Performance Engine Software
2 badge points
Dinan performance software recalibrates the M5 engine management system for snappier throttle response, increased power output and improved driveability. The rev-limiter is increased by 150 to 8400 rpm and the factory top-speed governor has been removed. The software also provides re-calibration of the factory "torque limiting" programming, ensuring that maximum power is available under varying driving conditions. Additional stages of Dinan engine software are also available for use with specific combinations of Dinan products, ensuring the best possible performance and drivability.
+15 hp @ 8100 rpm / +15 lb-ft of torque @ 3000 rpm*
*Dyno tested without factory hydrocarbon filters.
High Flow Air Mass Meter/Intake Assemblies
3 badge points
This system takes full advantage of the Ram-Air ducting, Dinan has increased the volume of the Air-boxes in order to accommodate large high-flow filter elements, dramatically improving intake efficiency. The diameter of the integrated Air Mass Meters has also been increased, further improving the ability to deliver cool, oxygen rich air into the engine for maximum output. The increase in air-flow is dramatic, with dyno tests measuring an additional 21 horsepower.
+21 hp @ 7500 rpm / +14 lb-ft of torque @ 7500 rpm
Free Flow Rear mufflers
3 badge points
Reduced weight, 100% 304-stainless steel construction, a great sporty exhaust note and superior flow make for the best performing M5 mufflers on the market. Four 3.5" polished stainless steel tips give the car a tasteful high performance look unlike any other. The tips also feature a unique self-cooling design that reduces discoloration over time.
+9 hp @ 8000 rpm / +6 lb-ft of torque @ 8000 rpm
High Flow Throttle Body
2 badge points
The M5 throttle bodies are carefully bored to a larger internal diameter for further improvement in air-flow, increasing power output and providing more immediate throttle response. Matching Stage 2 Engine Software is recommended for optimum performance and drivability.
+13 hp @ 8100 rpm / +8 lb-ft of torque @ 8100 rpm
Racing Middle Exhaust
Substantial improvement in flow come from a complete replacement of the nearly 8 foot mid-exhaust section that runs from the headers to the dinan free flow mufflers. The system dramatically improves flow for increased power as well as producing an unmistakably aggressive exhaust note. Several versions are available, offering two resonator options or no resonators at all for maximum power output. Each version produces a distinctly different exhaust note and volume level, enabling the driver to tune the exhaust system for personal preference. This is a "racing only" product that is not intended for use on pollution-controlled motor vehicles driven on the street.
+9 hp @ 7500 rpm / +6 lb-ft of torque @ 7500 rpm
5.7 Liter High Performance V-10 Engine
10 badge points
For those seeking the ultimate driving experience, Dinan has redefined M5 performance with a bored and stroked 5.7 Liter version of BMW's V-10 engine, producing over 600 horsepower along with stump-pulling torque thats available at virtually and engine speed. The engine is supplied completely assembled and ready for installation, backed by Dinan's comprehensive matching new car warranty coverage. Carefully calibrated Dinan engine management software is included, ensuring optimum performance and drivability. The High Flow Air Mass Meter/Intake Assemblies are required in order to supply adequate intake air flow.
611 hp @ 7500 rpm / +468 lb-ft of torque @ 6000 rpm*
*Tested with High Flow Air Mass Meter/Intake Assemblies, High Flow Throttle Bodies and Free Flow Rear Mufflers.
Under-Drive Crank Pulleys
Dinan has developed two under-drive pulley options for further increases in power output. The street version represents a 12% reduction, increasing output by 5 horsepower. The racing-only version offers a 17% reduction, resulting in an additional 8 horsepower.
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