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Chiptuning files » ECU and TCU » Bosch MED17.5.21 » Flex fuel mod for E85 or other fuel types

Flex fuel mod for E85 or other fuel types for Bosch MED17.5.21

The engine adapts to the fuel that is in the tank, from petrol to E85 and any blend in between. This is not a fixed E85 calibration.

Flex fuel mod for E85 or other fuel types files for vehicles with Bosch MED17.5.21

88 of the 120 vehicles with this unit

VehicleGenerationFuelPower
A1 25 TFSI - (1.0T)GB 2018Petrol95 hp
A1 25 TFSI (1.0T) (2021 - ...)GB 2018Petrol95 hp
A1 1.0 TFSi8X Facelift 2015 2018Petrol82 hp
A1 1.0 TFSI8X Facelift 2015 2018Petrol95 hp
A1 1.4 TFSI (COD)8X Facelift 2015 2018Petrol150 hp
A1 1.4 TFSI8X 2010 2014Petrol122 hp
A1 1.4 TFSI8X 2010 2014Petrol140 hp
A3 1.4 TFSI (COD) (2016 - 2017)8V Facelift 07/2016 2020Petrol150 hp
A3 1.2 TSI S&S8V 2012 2016Petrol85 hp
A3 1.2 TSI8V 2012 2016Petrol105 hp
A3 1.2 TFSI8V 2012 2016Petrol110 hp
A3 1.4 TFSI (2013 - 2014)8V 2012 2016Petrol122 hp
A3 1.4 TFSI (2013 - 2016)8V 2012 2016Petrol125 hp
A3 1.4 TFSI COD (2013 - 2014)8V 2012 2016Petrol140 hp
A3 1.4 TFSI COD (2014 - 2016)8V 2012 2016Petrol150 hp
A3 1.2 TSi8P Facelift 2008 2012Petrol105 hp
A3 1.4 TSi8P Facelift 2008 2012Petrol122 hp
A4 1.4 TFSIB9 07/2015 2018Petrol150 hp
Q2 1.0 TFSiGA 2016 2020Petrol116 hp
Q2 30 TFSI (1.0T) (2018 - 2020)GA 2016 2020Petrol116 hp
Q2 1.4 TFSiGA 2016 2020Petrol150 hp
Q3 1.4 TFSI8U 09/2011 2014Petrol150 hp
Beetle 1.2 TSI2011 - 2016Petrol105 hp
Caddy 1.2 TSiIV 07/2015 2020Petrol84 hp
Caddy 1.4 TGIIV 07/2015 2020Petrol110 hp
Eos 1.4 TSi2006 2015Petrol122 hp
Golf 1.0 e-TSIVIII 03/2020 05/2024Petrol110 hp
Golf 1.0 e-TSIVIII 03/2020 05/2024Petrol110 hp
Golf 1.0 TSIVIII 03/2020 05/2024Petrol110 hp
Golf 1.0 TSI (2021 - ...)VIII 03/2020 05/2024Petrol110 hp
Golf 1.0 e-TSI (2021 - ...)VIII 03/2020 05/2024Petrol110 hp
Golf 1.0 TSIVIII 03/2020 05/2024Petrol110 hp
Golf 1.0 eTSIVIII 03/2020 05/2024Petrol (mild hybrid)110 hp
Golf 1.0 TSIVII Facelift 02/2017 2020Petrol86 hp
Golf 1.0 TSiVII Facelift 02/2017 2020Petrol110 hp
Golf 1.0 TSIVII Facelift 02/2017 2020Petrol115 hp
Golf 1.0 TSiVII 2012 2017Petrol85 hp
Golf 1.2 TSIVII 2012 2017Petrol86 hp
Golf 1.2 TSI (2012 - 2014)VII 2012 2017Petrol105 hp
Golf 1.4 TGIVII 2012 2017CNG110 hp
Golf 1.2 TSI (2014 - 2017)VII 2012 2017Petrol110 hp
Golf 1.0 TSI (2015 - 2016)VII 2012 2017Petrol115 hp
Golf 1.4 TSI (2012 - 2014)VII 2012 2017Petrol122 hp
Golf 1.4 TSI MultifuelVII 2012 2017Petrol125 hp
Golf 1.4 TSI (2014 - 2017)VII 2012 2017Petrol125 hp
Golf 1.4 TSI ACT (2012 - 2014)VII 2012 2017Petrol140 hp
Golf 1.4 TSI ACT (2014 - 2017)VII 2012 2017Petrol150 hp
Golf 1.2 TSiVI 2008 2012Petrol86 hp
Golf 1.2 TSiVI 2008 2012Petrol105 hp
Golf 1.4 TSiVI 2008 2012Petrol122 hp
Golf 1.4 TSiV 2003 2008Petrol122 hp
Jetta 1.4 TSiVII 2018 2021Petrol150 hp
Jetta 1.4 TFSIVI 2010 2014Petrol122 hp
Jetta 1.4 TSi (CAVA)VI 2010 2014Petrol150 hp
Jetta 1.4 TSiV 09/2005 2010Petrol122 hp
Passat 1.4 TSI ACT (2014 - 2018)B8 2014 2019Petrol150 hp
Passat 1.4 TSiB7 2010 2014Petrol122 hp
Passat 1.4 TGIB7 2010 2014Petrol150 hp
Passat 1.4 TSiB7 2010 2014Petrol150 hp
Polo 1.0 TSIVI (A0) 2017 2021Petrol95 hp
Polo 1.0 TSI (2021 - ...)VI (A0) 2017 2021Petrol95 hp
Polo 1.0 TSI (11/2020 - ...)VI (A0) 2017 2021Petrol95 hp
Polo 1.0 TSI (2017 - 10/2020)VI (A0) 2017 2021Petrol95 hp
Polo 1.0 TSI (11/2020 - 2021)VI (A0) 2017 2021Petrol95 hp
Polo 1.0 TSI (2017 - 2018)VI (A0) 2017 2021Petrol115 hp
Polo 1.2 TSiV Facelift (6C1) 05/2014 2017Petrol90 hp
Polo 1.0 TSiV Facelift (6C1) 05/2014 2017Petrol95 hp
Polo 1.2 TSiV Facelift (6C1) 05/2014 2017Petrol110 hp
Polo 1.0 TSiV Facelift (6C1) 05/2014 2017Petrol110 hp
Polo Blue GT 1.4 TSi ACTV Facelift (6C1) 05/2014 2017Petrol150 hp
Polo Blue GT 1.4 TSi (2012 - 2014)V (6R) 2009 2014Petrol140 hp
Scirocco 1.4 TSI/TFSI S&SIII Facelift 2014 2018Petrol140 hp
Scirocco 1.4 TSiIII 2008 2014Petrol122 hp
Sharan 1.4 TSiII Facelift 07/2015Petrol150 hp
T-Roc 1.0 TSI (2024 - 2025)I Facelift 2022 2025Petrol116 hp
T-Roc 1.0 TSI (GPF) (2018 - 2021)I 2017 2021Petrol116 hp
T-Roc 1.0 TSI (2017 - 2018)I 2017 2021Petrol116 hp
Tiguan 1.4 TSIII Facelift (NZ) 11/2020 2024Petrol150 hp
Tiguan 1.4 TSI (2016 - 2018)II (NZ) 2016 2020Petrol150 hp
Tiguan 1.4 TSII (NZ) 2007 2016Petrol122 hp
Touran 1.2 TSI (2015 - 2016)II 09/2015Petrol110 hp
Touran 1.2 TSI (2015 - 2018)II 09/2015Petrol110 hp
Touran 1.4 TSI (2015 - 2018)II 09/2015Petrol150 hp
Touran 2.0 FSI (2003 - 2006)I 2003 2010Petrol150 hp
Up! 1.0 TSI (2016 - 2018)Facelift 2016Petrol90 hp
Up! 1.0 TSI (2018 - 2019)Facelift 2016Petrol90 hp
Up! 1.0 TSI12/2011 2016Petrol90 hp
Up! 1.0 TSI GTI12/2011 2016Petrol115 hp

Other modifications for Bosch MED17.5.21

Engine performance

Stage 1Stage 2 BASEStage 3 BASEE85 or other special fuels modificationAnti lagSport button power

Sound and driving

Pops and bangsHardcut limiterHardcut Popcorn limiter for dieselExhaust flap control/offCold start off - Catalyst heating offStart/Stop System OffVMAX speedlimit on/off higher/lowerIdle RPM Mod

Deactivations and fixes

DTC offCatalyst offDPF/OPF/GPF offEGR offNOX offSwirl flaps offEVAP offTVA offSAI offCylinder On Demand offReadiness okChecksum Correction

Immobiliser and cloning

IMMO_OFF
Results vary per vehicle, and what is possible can differ per software version. This applies to every modification we deliver, for the ECU and for the TCU. Upload your original file to check what is available for your vehicle.

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Also listed: Alientech KESS3, Alientech KESSv2, Alientech K-TAG, Flashtec CMD, Dimsport New Genius, Dimsport New Trasdata, bFlash, ByteShooter Toolbox, HP Tuners, PCM-Flash.

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Flex fuel mod for E85 or other fuel types for other units

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