MaxxECU RACE H2O Plug-in EXTRA (Audi S3/A4 1.8T ME7.5) ECU

Key specs

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

Fits: Audi S3 8L 1.8T (BAM, AMK, APY, AUL), Audi A4 B5/B6 1.8T (APU, BEX), Audi TT 8N 1.8T (AUM, AUQ, ARY, BAM, APX, APP, AJQ), VW Golf IV GTI 1.8T (AUM, AUQ), Skoda Octavia RS 1.8T (AUQ), Seat Leon 1.8T (AMK, ARY, AUQ, AJQ). Kit includes the RACE H2O ECU, ME7.5 plug-in adapter, Bosch LSU 4.2 wideband sensor and cable, MAP hose kit, USB cable and Bluetooth antenna. No automatic transmission support on any model. APU, APY, AUL and early TT (APX/APP/AJQ) cars have no stock wideband, so fit the supplied external LSU 4.2; cars with a stock LSU 4.2 must not connect an external one. The air mass meter (MAF) is removed; the built-in 400 kPa MAP sensor replaces it. The unit may not fit in the stock plastic ECU box; a relay holder must be modified and moved. The EPC light runs over CAN only; not every ME7.5 car has CAN pinned to the OBD port. Injector/ignition counts are not published for this adapter; the store lists only 'Audi S3/A4', the wider vehicle list comes from MaxxECU's wiring manual. The store page shows a placeholder image; the photo is from the MaxxECU plug-in product page.

Software

MTune (free)

Logging

8 MB onboard, up to 1000 Hz

Links

Product page ↗

Fits

Audi A3 / S3 · Audi A4 / S4 / RS4 · Audi TT / TTS / TT RS · SEAT Leon · Skoda Octavia · Volkswagen Golf

Tuning

Find a MaxxECU tuner with a dyno

Maker

MaxxECU: history, software and every model