ECU Shootout

Emtron SL4 ECU

MidWire-in
US$1,700
US dealer price (Elite Performance); official AUD 2,400 (~USD 1,580)Checked

The Emtron SL4 is a mid-range wire-in engine control unit (ECU) from Emtron. It has 4 injector and 4 ignition outputs, support for up to 4 cylinders, 1 drive-by-wire throttle channel and knock control. List price is US$1,700. 12 sellers list it from US$1,512 to US$1,805.

Prices checked . Specs from Emtron's published data.

Pixel illustration of the Emtron SL4
Emtron SL4 product photo
Photo: Emtron · emtron.world ↗

Key specs

4INJECTORS
4IGNITION
4MAX CYL
1DBW
0λ WIDEBAND
2KNOCK
1CAN 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
KV-derived compact ECU, 10 aux PWM, oscilloscope, accelerometer; wideband via CAN ELC1/ELC2
Software
Emtune (free)
Logging
32 MB onboard (1200+ ch)
Case
130 × 120 × 27 mm
Links
Product page ↗Price source ↗
Plug-ins
Emtron makes 25 model-specific plug-in fitments. Find one for your car
Tuning
Find a Emtron tuner with a dyno
Maker
Emtron: history, software and every model

Where to buy the SL4

13 sellers found

LowestUS$1,512Xtra Motorsport · Lithuania
TypicalUS$1,682median of 12 priced
HighestUS$1,80519% above lowest
In stock11 of 13as listed
EUR 1,350≈ US$1,512ex VAT
AUD 2,182≈ US$1,529ex VAT
Whitey's Wiring ↗
AUAustralia in stock
AUD 2,200≈ US$1,542
Mach1 Motorsport ↗
AUAustralia in stock
AUD 2,280≈ US$1,598incl VAT
Emtron (official store) ↗
AUAustralia Maker in stock
AUD 2,400≈ US$1,682
Auto Tech Wiring ↗
AUAustralia in stock
AUD 2,400≈ US$1,682
Got It Rex ↗
AUAustralia in stock
AUD 2,400≈ US$1,682incl VAT
Quickbitz ↗
AUAustralia in stock
AUD 2,400≈ US$1,682
Classified Motorsports ↗
CACanada out of stock
USD 1,700
USD 1,700
Elite Performance ↗
USUSA in stock
USD 1,700
USD 1,805
QAR 10,795

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.

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