ECU Shootout

DIYAutoTune MicroSquirt V3.0 ECU

EntryWire-in
US$325
DIYAutoTune 'from' price, assembled ECU (AMP'd MicroSquirt from $349.99)Checked

The DIYAutoTune MicroSquirt V3.0 is an entry-level wire-in engine control unit (ECU) from DIYAutoTune / AMP EFI. It has 2 injector and 2 ignition outputs and support for up to 8 cylinders. List price is US$325. 10 sellers list it from US$314 to US$550.

Prices checked . Specs from DIYAutoTune / AMP EFI's published data.

Pixel illustration of the DIYAutoTune MicroSquirt V3.0
DIYAutoTune MicroSquirt V3.0 product photo
Photo: DIYAutoTune · diyautotune.com ↗

Key specs

2INJECTORS
2IGNITION
8MAX CYL
0DBW
0λ WIDEBAND
0KNOCK
1CAN BUSES
PCLOGGING

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
Tiny sealed MS2-based ECU; 2 injector channels (batch) for small engines/bikes
Software
TunerStudio MS (free Lite, paid registration for full)
Logging
PC only
Links
Product page ↗
Tuning
Find a MegaSquirt tuner with a dyno
Maker
DIYAutoTune / AMP EFI: history, software and every model

Where to buy the MicroSquirt V3.0

11 sellers found

LowestUS$314PMB Performance · USA
TypicalUS$369median of 10 priced
HighestUS$55075% above lowest
In stock7 of 11as listed
PMB Performance ↗
USUSA in stock
USD 314
McGee Racing ↗
USUSA in stock
USD 320
DIYAutoTune ↗
USUSA Maker in stock
USD 325ECU only; USD 379.99 with 8ft harness
EFI Motorsport ↗
USUSA in stock
USD 325
Stinger Performance ↗
?Location not stated in stock
USD 350MicroSquirt V3.0 + 36in flying-lead harness + serial cable; sale price (list 389.99); currency shown as "$"; seller country not confirmed
MA Performance ↗
USUSA out of stock
USD 388MicroSqrt8 (ECU + 8ft harness)
Summit Racing ↗
USUSA in stock
USD 389MICROSQUIRT8 package (ECU + 8ft harness)
ProTunerz ↗
USUSA in stock
USD 390with 8ft harness
CAD 722≈ US$508part no. MICROSQRT3; currency shown via Canadian flag
GBP 415≈ US$550MicroSquirt V3 with 8ft loom; + GBP 15 postage
Price on requestprice not displayed on page

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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