Adaptive ethanol tuning with guided setup, base octane calibration, optional map packs, and performance support add-ons.
This determines whether a FEMTO unlock or re-unlock is needed before tuning.
If BM3 or MHD was already installed in the root DME before Jan 2026, a FEMTO re-unlock should not be required.
Select the ecosystem you will use to flash and run the CarBahn calibration.
Leave selected if you need it. Remove anything you already own.
The base calibration includes flex fuel adaptation. Choose the octane level that matches your typical fuel.
Your tune can hold four maps: your base tune and up to 3 additional maps for $200 each. Any map can be custom tuned for extra power for an additional $200 each! We calibrate according to your power goals and build you a custom map.
Reduced power and speed-limited calibration designed to protect the vehicle when driven by parking attendants, service staff, or other drivers.
Near-stock power delivery and drivability intended for dealership visits, inspections, emissions testing, or general service appointments.
Smooth and refined calibration focused on everyday drivability with predictable throttle response, comfortable power delivery, and OEM-like behavior while retaining strong performance capability.
Torque delivery is calibrated to build progressively and predictably throughout the RPM range, improving traction, driver confidence, and overall vehicle balance during spirited driving or track use.
Reduced low-end torque for improved traction and smoother street drivability, especially useful on cold tires or poor road surfaces.
Maximum engine response, aggressive torque targeting, and fastest boost response for competitive driving and maximum acceleration.
Recommended supporting hardware and software for higher performance builds.
CarBahn Flex Fuel tuning continuously adapts ignition, fueling, and boost targets based on ethanol content in real time. Whether running premium pump fuel or blending up to E40, the calibration dynamically adjusts to optimize performance while maintaining drivability and refinement.
Measured on CarBahn calibrated S58 platforms using E40 fuel blends. Results vary by hardware, fuel quality, environmental conditions, and vehicle configuration.
E40 Flex Fuel Calibration with Custom Tuning Potential
OEM: 553 HP / 501 lbft
Tuned: 828 HP / 744 lbft
OEM: 465 HP / 421 lbft
Tuned: 696 HP / 625 lbft
Tuned: 859 HP / 757 lbft
Tuned: 722 HP / 636 lbft
Additional power potential is available through custom calibration refinement tailored to fuel quality, environmental conditions, and vehicle configuration.
E40 Flex Fuel Calibration with Custom Tuning Potential
OEM: 567 HP / 510 lbft
Tuned: 823 HP / 750 lbft
OEM: 465 HP / 419 lbft
Tuned: 675 HP / 615 lbft
Tuned: 854 HP / 759 lbft
Tuned: 701 HP / 623 lbft
Additional power potential is available through custom calibration refinement tailored to fuel quality, environmental conditions, and vehicle configuration.
No aftermarket company can blanket void your entire vehicle warranty. Manufacturers must demonstrate that a modification directly caused a failure in order to deny related warranty coverage.
CarBahn Flex Fuel calibrations dynamically adapt between standard premium fuel and ethanol blends up to approximately E40 depending on hardware configuration.
Yes. Maintaining OEM-like drivability, cold start behavior, and refinement are major priorities during calibration development.
Heat exchangers, filters, clutches, and transmission software may be recommended depending on power goals and intended usage.
CarBahn Flex Fuel tuning continuously adapts ignition, fueling, and boost targets based on ethanol content in real time. Whether running premium pump fuel or blending up to E40, the calibration dynamically adjusts to optimize performance while maintaining drivability and refinement.
Measured on CarBahn calibrated S58 platforms using E40 fuel blends. Results vary by hardware, fuel quality, and conditions.
E40 Flex Fuel Calibration
OEM: 553 HP / 501 lbft
Tuned: 828 HP / 744 lbft
OEM: 465 HP / 421 lbft
Tuned: 696 HP / 625 lbft
Tuned: 859 HP / 757 lbft
Tuned: 722 HP / 636 lbft
E40 Flex Fuel Calibration
OEM: 567 HP / 510 lbft
Tuned: 823 HP / 750 lbft
OEM: 465 HP / 419 lbft
Tuned: 675 HP / 615 lbft
Tuned: 854 HP / 759 lbft
Tuned: 701 HP / 623 lbft
E40 Flex Fuel Calibration
OEM: 528 HP / 478 lbft
Tuned: 790 HP / 710 lbft
OEM: 465 HP / 421 lbft
Tuned: 696 HP / 625 lbft
Tuned: 820 HP / 722 lbft
Tuned: 722 HP / 636 lbft
No aftermarket company can blanket void your entire vehicle warranty. Under the Magnuson–Moss Warranty Act, manufacturers must demonstrate that a modification directly caused a failure in order to deny related warranty coverage.
CarBahn Flex Fuel calibrations dynamically adapt between standard premium fuel and ethanol blends up to approximately E40 depending on hardware configuration.
Yes. Maintaining OEM-like drivability, cold start behavior, and refinement are major priorities during calibration development.
Heat exchangers, filters, clutches, and transmission software may be recommended depending on power goals and intended usage.
