This article was adapted for drivers and tuning professionals in the United States by Viezu USA. Measurements are shown in US units alongside the originals.
Gasoline Tuning Webinar: Audi S3 2.0 TFSI in ECM Titanium 3.0
In this map writing demo, Viezu Technologies gets hands-on with gasoline ECU tuning in ECM Titanium 3.0. With an Audi S3 2.0 TFSI (Bosch MED17.5 ECU) as the case study, we take you through the whole job, from reading the ECU safely to finding the maps, making practical Stage 1 changes and validating the result.
The webinar aired live on Tuesday, October 21. You can watch the recording below. Watch the video
What We Covered
An overview of ECM Titanium 3.0
- The SMART tuning method for Stage 1 gasoline performance tuning
- Finding and investigating maps: understanding the key maps needed for tuning, and exploring the Stage 1 potential within the stock calibration data
- Stage 1 tuning: how to change the ECU data safely and effectively for a smooth, progressive Stage 1 tune
- Writing back and validating: checksums, post-write checks, datalogging and dyno testing
Finding and investigating maps
- The key maps: requested engine load, torque management, desired lambda, turbo pressure control and limiters, rail pressure, ignition angle and more
- Investigation: pinpointing the Stage 1 tuning potential within the stock ECU calibration data
The Stage 1 tune
- Methods for adjusting torque requests and limiters, the fuel system, ignition timing and rail pressure to unlock the vehicle's safe potential
- Tuning the turbo system for a reliable boost increase that supports the revised fueling, for a dependable Stage 1 result
Writing back and validating
- A quick look at checksum handling, flashing and clearing DTCs
- Validating with logs and the dyno (boost, AFR, torque, ignition timing), refining in iterations, and what Stage 1 typically improves (no fixed figures)
Featured Product
Alientech ECM Titanium 3.0: developed by Alientech, ECM Titanium remapping software lets you view and tune any of the original engine and transmission control unit calibrations with no outside help. Available as a 12-month or 6-month subscription; contact us for current US pricing.
US emissions compliance note
In the United States, modifying, removing or disabling emissions-control equipment (including DPF*, EGR*, SCR*/DEF* and catalytic converter systems) on a vehicle used on public roads may violate the federal Clean Air Act and EPA rules, and in California and other states that follow CARB standards, additional restrictions apply. Any off-road, race or competition-only modification described here is not intended for street use. Nothing in this article claims that any product or calibration is EPA- or CARB-certified or street legal. For guidance on options for your vehicle, contact Viezu USA.
Talk to Viezu USA
Want to know what Viezu can do for your vehicle or your business? Request a performance upgrade quote, browse viezuusa.com or contact the Viezu USA team.
* EMISSIONS TAMPERING WARNING
Removing, disabling, deleting, or rendering inoperative any emissions control device or system (including DPF, EGR, SCR/DEF, catalytic converters, and related sensors or software) on a vehicle used on public roads is prohibited under the U.S. Clean Air Act and may also violate state laws, including California Air Resources Board (CARB) regulations. Violations can carry substantial civil penalties for vehicle owners, installers, and sellers.
Any reference in this article to DPF, EGR, SCR, or other emissions-related functions is provided for informational purposes and, where applicable, for closed-course competition or off-road use only where permitted by law. Viezu USA does not condone emissions tampering on any road-going vehicle. It is the customer's sole responsibility to ensure that any modification complies with all applicable federal, state, and local laws, regulations, and policies, regardless of what country you live in.