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Website Relaunch

webcontact@gummel-informatics.de (Dominik Gummel) — Wed, 11 Nov 2026 10:16:28 +0100

Au revoir Plone, salut Hugo! :-)

Contact

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

Angaben gemäß § 5 TMG:
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M.Sc. Dominik Gummel St-Agatha Straße 8 66271 Kleinblittersdorf GERMANY Umsatzsteuer-Identifikationsnummer gemäß §27 a Umsatzsteuergesetz: DE 272480438

Corrado

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

Corrado
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delayed WOT enrichment a.k.a. Digi-Lag

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

The Digifant 1 ecu uses closed loop lambda control for computing the injection amount at idle and part throttle (regulation to lambda 1). At full throttle (WOT, wide open throttle), the engine has to run richer than lambda 1 to produce more power / torque and to keep the temperature in the combustion chamer in a safe area. This WOT enrichment is achieved by deactivating the lambda control and computing the injected fuel out of the map data (open loop). The firmware of the digifant ecu (program code) contains a “feature” which delays the reaction on pressing the WOT switch for 3-4 seconds. The closed loop lambda control is still active (and regulates to lambda 1) for the first 3-4 seconds on WOT. This “feature” is called “Digi-Lag”. It leads to a poor reaction on flooring the gas pedal (gasoline engine produces it’s maximum torque around lambda 0.85 - 0.9 and not at lamda 1!). All factory chips and many tuning chips contain the Digi-Lag! I changed the program code to get instant WOT enrichment and succeeded in completely removing the “digi-lag”! Beyond that, I’m able to activate the WOT open-loop (WOT enrichment) on part throttle based on a boost threshold (i.e. activate WOT-enrichment if boost >= 0.8 bar / 11 psi).

Digifant I

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

Pic of a opened Digifant I ECU on my desk (equiped with a 250kpa map sensor)

HiL-Simulator

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

I built a Hardware-in-the-loop (HiL) simulator for Digifant I ECUs. A HiL simulator simulates a running engine to the ecu. I used

an old wiring loom
arduino mega running an AVR ATmega 1280 MCU

LaunchControl und WOT-Shitfting

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

I developed a LaunchControl and WOT-Shifting extension for the Digifant 1 ecu. My LaunchControl and WOT-Shifting use ignition cut-off (fuel is continuously injected) and are able to spool up the turbine of a turbo charger. This leads to boost buildup on the starting line while the car is standing still! Ideal suited for the quarter mile! We’re using my LaunchControl and WOT-Shifting for Digifant 1 ecu in a FWD Corrado PG Turbo with great success on the quarter mile!

live remapping with eprom emulator

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

I’m able to adjust the firmware and data (maps) perfectly to a specific engine. I’m using an eprom emulator which allows me to change the complete eprom content while the engine is running and to see on my laptop which cell of a map the ecu is accessing (“hit tracing”). Of course passing emissions control will be no problem because the lambda control is active on idle and part throttle. Instant WOT enrichment; Digi-Lag will be disabled! . Every engine is possible which runs with Digifant 1 ecu: G40, G60 (8VG60, 16VG60), 8V / PG Turbo, 16V Turbo, naturally aspired 16V , 20VG60 etc. Modifications like

Mapsensor

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

#

Mapsensors suitable for Digifant I ECU:
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range of measurement	description	package
115 kpa	Freescale MPXA6115AC6U	SOP (SMD)
250 kpa	Motorola MPX 4250 AP	through-hole technology
304 kpa	Freescale MPXH6300A6U	SSOP (SMD)
400 kpa	Freescale MPXH6400A	SOP (SMD)

I designed and produced my own adapter pcbs for the 115 and 400kpa mapsensors. With theses pcbs they can be exchanged plug & play against the factory 200kpa mapsensor. These mapsensors do not only fit into the G60 Digifant I ecu but also in every Bosch ecu with internal mapsensor like Digifant 3, Audi S2 / RS2 / 200 20V Turbo Motronic, Opel/Vauxhall C20LET (Calibra Turbo) etc.

privacy policy

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

This privacy policy covers the use of my ‘Digifant 1 live data’ IOS and android app. The “Digifant 1 live data” app connects via bluetooth with the K-Line / Bluetooth interface I developed for the Digifant 1 ECU in order to be able to receive live data from the Digifant 1 ECU. I do not collect any statistics, personal information, location data or analytics from my users. The “Digifant 1 live data” app uses location data (GPS) to display the vehicle speed and thus to calculate acceleration times (e.g. 100 - 200 km / h).

VR6 remapping with eprom emulator on the street

webcontact@gummel-informatics.de (Dominik Gummel) — Mon, 01 Jan 2024 00:00:00 +0000

VR6 engine remapping (naturally aspirated or super charged with turbo or compressor) is also possible. For details see the article about Digifant remapping

This picture shows the remapping of a Golf 2 4Motion with 3L VR6 and Garrett GT35 Turbo.

flame thrower a.k.a. launch control for digifant 1 ecu

webcontact@gummel-informatics.de (Dominik Gummel) — Sun, 08 Jun 2014 00:00:00 +0000

        flames

…to get the sausages hot on the drag strip. :-) More information

Digifant 1: read live data over serial k-line

webcontact@gummel-informatics.de (Dominik Gummel) — Wed, 07 Nov 2012 00:00:00 +0000

        digifant 1 live data

My custom extension to read data out of the digifant 1 via serial k-line runs rock solid since 2011. I removed the oem code for fault diagnosis (blink code) and implemented my own protocol to write data to the serial k-line with up to 64k baud. I reach a much higher data rate (output of 32 values up to 100Hz!) as the kwp 1281 group readings from early 90ies. I’m using this to monitor important variables like knock detection while remapping the ecu. Main article: read more

LaunchControl and WOT-Shitfting for Digifant 1 Ecu

webcontact@gummel-informatics.de (Dominik Gummel) — Wed, 07 Nov 2012 00:00:00 +0000

I developed a LaunchControl addon for the Digifant 1 firmware. My LaunchControl cuts the ignition and builds up boost while the car stands still (like the well known WOT-Box oder some free programmable ecus like KMS). For example it’s possible to build up 1.5 bar boost (21 psi) standing at the starting line of the dragstrip (drag slicks are advisable for fwd cars like the corrado). WOT-Shifting is also available: cutting ignition allows to stay on WOT (wide open throttle) and keep the boost while changing the gear. More information

Digifant 1 Ecu with 400kpa map sensor

webcontact@gummel-informatics.de (Dominik Gummel) — Sun, 01 Apr 2012 00:00:00 +0000

I’m able to do Digifant 1 remappings using a 400kpa map sensor. This allows to use the Digifant 1 with 3 bars of boost (44psi)!

Digi-Lag defeated

webcontact@gummel-informatics.de (Dominik Gummel) — Fri, 01 Jul 2011 00:00:00 +0000

VW implemented a delayed reaction on WOT (wide open throttle) which stays in closed loop mode (Lambda 1) for ~ 3 seconds. This causes suboptimal performance on the transition from idle / part time throttle to wot. I eleminated the Digi-Lag in the program code. read more: delayed WOT enrichment a.k.a. Digi-Lag

live data over k-line

webcontact@gummel-informatics.de (Dominik Gummel) — Sat, 01 Jan 2011 00:00:00 +0000

VW implemented only blink code output of fault codes in the Digifant I firmware (25 pin european version until 92). However the Digifant I hardware has everything needed to build a real serial diagnosis protocol (SCI port ot the microcontroller is wired to the diagnosis pin 20). I removed the oem blink code output and implemented my own serial output protocol. This allows me to write periodically arbitrary data to the serial k-line. Serial data out runs rock solid in my two corrados since 2011. I’m reading 32 values 10 times per second (10Hz). This is outrageos faster than the OEM K-Line protocols like KWP1281 VW developed for newer ecus. :) Some interesting data I read out are for example the cylinder knock values for each cylinder, ignition retard based on knock, boost, ignition, engine coolant temperature (ect), intake air temperature (iat), injection time, lambda, voltage, enrichment…

Privacy Policy

webcontact@gummel-informatics.de (Dominik Gummel) — Tue, 01 Jan 2002 00:00:00 +0000

Datenschutzerklärung nach der DSGVO
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I. Name und Anschrift des Verantwortlichen Der Verantwortliche im Sinne der Datenschutz-Grundverordnung und anderer nationaler Datenschutzgesetze der Mitgliedsstaaten sowie sonstiger datenschutzrechtlicher Bestimmungen ist die: Dominik Gummel St.-Agatha-Straße 8 66271 Kleinblittersdorf Tel.: 06805 9301963 E-Mail: info AT gummel-informatics.de Website: www.gummel.net, digifant-onlineabstimmung.de

Home on gummel.net

Website Relaunch

Contact

Angaben gemäß § 5 TMG: #

Corrado

Corrado #

delayed WOT enrichment a.k.a. Digi-Lag

Digifant I

HiL-Simulator

LaunchControl und WOT-Shitfting

live remapping with eprom emulator

Mapsensor

#

Mapsensors suitable for Digifant I ECU: #

privacy policy

VR6 remapping with eprom emulator on the street

flame thrower a.k.a. launch control for digifant 1 ecu

Digifant 1: read live data over serial k-line

LaunchControl and WOT-Shitfting for Digifant 1 Ecu

Digifant 1 Ecu with 400kpa map sensor

Digi-Lag defeated

live data over k-line

Privacy Policy

Datenschutzerklärung nach der DSGVO #

Angaben gemäß § 5 TMG:
#

Corrado
#

Mapsensors suitable for Digifant I ECU:
#

Datenschutzerklärung nach der DSGVO
#