rusEFI Hellen 121 VAG (plug-in) ECU
MidPlug-in
US$900US$900 list
rusEFI eBay store listingChecked The rusEFI Hellen 121 VAG (plug-in) is a mid-range plug-in engine control unit (ECU) from rusEFI. List price is US$900. One seller lists it at US$900.
Prices checked . Specs from rusEFI's published data.
No photo yetSee it on the maker's page ↗
Key specs
–INJECTORS
–IGNITION
–MAX CYL
–DBW
–λ WIDEBAND
–KNOCK
–CAN BUSES
✓LOGGING
DBW = drive-by-wire throttle channels · λ wideband = onboard wideband lambda (oxygen sensor) inputs · CAN = controller area network buses.
Features
- ?Drive-by-wire
- ?Onboard wideband
- ?Knock control
- ✓Flex fuel
- ✓Traction control
- ✓Launch control
- ✓Boost control
- ✕Gearbox control
- ✓Onboard logging
- ✕Ethernet
- ✓USB
- ✕Built-in display
✓ published · ✕ not offered · ? not published. Some features, like traction control and launch control, mean different things by brand. See the glossary.
Details
- Highlights
- Hellen-platform plug-and-play for VW/Audi 121-pin; other PnP: Honda K $850, GM E38X $800
- Software
- TunerStudio / rusEFI console, free (open source)
- Logging
- SD card
- Links
- Product page ↗
- Plug-ins
- rusEFI makes 17 model-specific plug-in fitments. Find one for your car
- Maker
- rusEFI: history, software and every model
Where to buy the Hellen 121 VAG (plug-in)
1 sellers found
LowestUS$900rusEFI (official eBay store) · USA
TypicalUS$900median of 1 priced
HighestUS$900
In stock1 of 1as listed
USD 9005 available
No sellers match. Try another region or turn off “In stock only”.
Prices as shown on each seller's site on , in their own currency, converted at 14 Oct 2026 rates. Shipping, import duty and tax vary. Check with the seller before you buy.
