Higher-output files for hardware-modified vehicles
Stage 2 files are calibrated for vehicles where supporting hardware modifications are already in place. With an uprated intercooler, freer-flowing exhaust and improved induction, the ECU can safely run significantly more boost and fuelling than a Stage 1 map would allow on a stock vehicle. These files are built to work with the hardware, not against it.
Order Stage 2 files when the supporting hardware is already fitted and verified. The file is calibrated specifically for modified vehicles and will not be appropriate on a stock car. Check the hardware list before ordering and make sure your customer understands the prerequisites.
Search by make, model and engine variant to see available ECU tuning files and power gain figures.
Vehicle Search Access the PortalA Stage 2 remap takes advantage of hardware that has already been fitted to increase the engine's ability to move air and fuel. With an uprated intercooler, the charge temperature under boost is lower, allowing more fuel to be safely added. With a freer-flowing exhaust or decat, backpressure is reduced and turbo spool improves. With a larger or less restrictive induction kit, the turbo has a cleaner air supply. The Stage 2 ECU file is calibrated to exploit all of these improvements simultaneously: boost targets are raised, fuel delivery is increased and ignition timing is optimised for the hardware combination. The result is a meaningfully higher power figure than a Stage 1 remap can achieve on the same vehicle in stock form, and a calibration that actually matches what the engine is now capable of.
Stage 2 files follow the same platform coverage as Stage 1: Bosch EDC17 and MED17, Continental SID, Delphi DCM, Denso, Marelli, Siemens/Continental VDO and all major OEM-fitted units across European, Asian and American manufacturers. Stage 2 calibrations are available for turbocharged petrol and diesel platforms. Naturally aspirated engines are not typically Stage 2 candidates, as the gains depend on the turbo and intercooler hardware that NA engines do not have.
High-displacement turbocharged diesels with an uprated intercooler are the strongest Stage 2 candidates: the combination of lower charge temps and reduced exhaust backpressure allows the calibration to push boost and fuelling to levels that the standard hardware would not tolerate. Turbocharged petrol engines, particularly those running E85 or high-octane fuel on top of the hardware modifications, also respond very well. Road-going modified vehicles, track day cars, light commercial performance builds and motorsport-registered vehicles are all typical Stage 2 customers. The key qualification is that the hardware must be fitted, tested and verified before the Stage 2 file is ordered and written.
The ordering process is the same as Stage 1. Log into your trade account at portal.byteflash.co.uk, search for the vehicle, and select Stage 2 from the available file options. Before placing the order, confirm that the vehicle has the required supporting hardware fitted and that your customer is aware the file is calibrated for modified vehicles. If the vehicle does not yet have the required hardware, a Stage 1 file is the correct starting point. Once the Stage 2 file is delivered to your portal account, flash it using your standard tool. If you are unsure which file is appropriate for a specific build, use the contact form and our technical team will advise.
Search by vehicle make and model to see available tuning options and power gain figures.
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