It applies that a few extra horse powers added under the hood of the BMW 8 series Convertible G14 fit in just right. As a matter of fact, it’s not just the increase in horsepower and torque, but the overall set up of the BMW 8 series Convertible G14 in the extensively optimized version from dAHLer Competition Line.
Read more - Tuning for M850i xDrive
Get the dAHLer Competition Line upgrade, open top, and put that hammer down.
THE 8: BMW Engine Performance Tuning for M850i xDrive
- Enhanced power: 530 hp (390 kW), 750 Nm (553 ft-lbs), based on 98 octane gas rating
- (Engine Performance Tuning Module includes wiring harness)
- WLTP-E6d-temp tested and EU/CH homologated by the German TUV
More Engine Performance Upgrades available for gasoline and diesel models!
You can find the selection in the categories Gasoline Engine / Diesel Engine
BMW M850i: Engine Performance Tuning
QUICK FACTS
EU Version -> US Version
Max HP gain:
90 hp / 66 kW -> 85 hp US
Max Torque gain:
100 Nm / 74 ft-lbs -> 72 ft-lbs US
Standard power:
530 hp (390 kW) -> 523 hp US
750 Nm (553 ft-lbs) -> 553 ft-lbs US
Enhanced power:
620 hp (456 kW) -> 608 hp US
850 Nm (627 ft-lbs) -> 625 ft-lbs US
Based on 98 octane -> 93 octane US
More Engine Performance Upgrades available for gasoline and diesel models!
You can find the selection in the categories Gasoline Engine / Diesel Engine
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Our Engine Performance Tuning Module for BMW and BMW M cars is a direct plug in to the existing (OEM) engine harness for a factory appearance and fitment and an instant hp and Nm / ft-lbs gains. There are only POSITIVES. The customer will simply be blown away by the power increase.
Our Engine Performance Tuning Modules work with all BMW Mild-Hybrid cars.
BMW 8 series G14 Convertible: Exhaust Valve Controller
Our Exhaust Flap Control Module for the BMW 840i G14, G15, G16 was developed and manufactured in Germany and is a must have if you like to control the sound of your car.
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With the device installed you can manually open and close the standard built-in exhaust flap of your BMW M850i or 840i at any time. It operates at the push of a button on the in delivery included remote control or can be programmed to your mirror buttons, so the system will be very well integrated.
Installation of our Exhaust Flap / Valve Control Module in your BMW M850i or 840i is easy and can be carried out by anyone with a little manual skill. The device is a direct plug in to the existing (OEM) harness. You pull out the original plug and connect it to the socket. The other plug is then connected to the socket on the exhaust flap and the connection is done.
The complete installation takes place in the trunk and under-body. You look for a cable duct or unused sealing plug that leads from the inside to the outside. Power supply comes directly from the original plugs and there is no need to lay cables through the interior of the vehicle.
With our smart Exhaust Flap / Valve Control Module, one cannot close the exhaust flap permanently. This is for safety reasons as when driving at full throttle with the exhaust flap closed it could damage the engine in a long term.
Flap Control X
(Extra Features)
In addition, Stage 2 has the functions of Stage 1 and the following:
Start mode adjustable via remote control or memory function
Exhaust Flap Controller Installation Video
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