Flex Fuel Tune Add-On

$100.00

Delivery: Digital service; nothing ships. Revisions are normally worked in weekend batches.
Required: A compatible GropeTuned calibration and supporting hardware. Contact us if unsure.

Final sale. No change-of-mind returns or refunds. Read the policy

Need help choosing? Contact us.

After ordering

Contact GropeTuned with your order number, model year, transmission, complete mod list, fuel, and goals. For a retune, include what changed since your last completed tune.
Have a suitable Atlas adapter and laptop ready. I’ll provide instructions for your current tune file and the datalogs needed for your setup.
Calibration and datalog revisions are normally worked in weekend batches. Timing depends on the data and any issues we need to resolve.
Watch the checkout email address for your tune and instructions. Initial revisions for the agreed setup are included; later setup changes use the separate retune service.

Send your order and setup details

Add flex-fuel calibration support to a GropeTuned tune. This service covers the calibration changes and datalog revisions needed for a compatible flex-fuel setup.

Important: Flex-fuel hardware, sensor, and wiring are not included. Your vehicle must have a compatible flex-fuel kit installed and be mechanically ready for tuning. Contact GropeTuned before purchasing if you are unsure whether your setup is supported.

What it gets you

Ethanol-content-aware fuelling and ignition tables, blended across the range
Boost targets that scale with the fuel actually in the tank
Sensor calibration and failsafes, so a bad reading doesn't lean the car out
Datalog review and revisions until it's right on both ends of the blend

Add this to

This is an add-on to a calibration, not a standalone tune. Pair it with one of:

WRX Atlas E-Tune — the standard remote calibration
Teach-As-We-Go Tune — calibration plus the reasoning behind it
Or the tune already included with a G25-660 / G30-660 turbo kit or the BRZ manifold bundle

Also available: Speed Density Tune Add-On.

Calibration service and software feature

The $100 price covers GropeTuned’s calibration work. NAMR’s Ethanol Flex Fuel (CAN Bus) software feature for the VB WRX is available separately for $0. The free feature does not include a custom tune, hardware, or sensors.