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Megasquirt

MegaSquirt ECU is a trusted name in standalone engine management systems, offering tuners full control over fuel, ignition, and boost parameters. Designed for flexibility and precision, MegaSquirt ECUs support a wide range of engines and custom setups — perfect for enthusiasts building high-performance street, race, or turbocharged applications.

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Engine Management & Tuning Components

MegaSquirt

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MegaSquirt USB to Serial Adapter (USB-2920)

MegaSquirt USB to Serial Adapter (USB-2920) $35.00 USD

MegaSquirt 3 ECU with MS3X Expansion (MS3X357-C_BL)

MegaSquirt 3 ECU with MS3X Expansion (MS3X357-C_BL) $699.99 USD

MegaSquirt 8? Wiring Harness (MSHarness)

MegaSquirt 8? Wiring Harness (MSHarness) $99.99 USD

MegaSquirt Tuning Cable – MS3Pro EVO & ULTIMATE ECU’s (TuneCableM12)

MegaSquirt Tuning Cable – MS3Pro EVO & ULTIMATE ECU’s (TuneCableM12) $31.50 USD

MegaSquirt Gen2 PnP ECU | 1994-1995 Ford Mustang GT Manual (MSPNP2-EEC4B8)

MegaSquirt Gen2 PnP ECU | 1994-1995 Ford Mustang GT Manual (MSPNP2-EEC4B8) $869.99 USD

MegaSquirt Gen2 PnP ECU | 1990-1993 Mazda MX-5 Miata Manual (MSPNP2-MM9093)

MegaSquirt Gen2 PnP ECU | 1990-1993 Mazda MX-5 Miata Manual (MSPNP2-MM9093) $829.99 USD

MegaSquirt MS3Pro PnP ECU | 1994-1995 Mazda MX-5 Miata Manual (MSPNPPro-MM9495)

MegaSquirt MS3Pro PnP ECU | 1994-1995 Mazda MX-5 Miata Manual (MSPNPPro-MM9495) $1,299.99 USD

MegaSquirt MegaSquirt-II Programmable EFI System PCB3.0 (MS230-K)

MegaSquirt MegaSquirt-II Programmable EFI System PCB3.0 (MS230-K) $324.99 USD

MegaSquirt MS3Pro Ultimate F4/F6 Replacement Fuse (0451.375MRL)

MegaSquirt MS3Pro Ultimate F4/F6 Replacement Fuse (0451.375MRL) $2.50 USD

MegaSquirt Metal DB37 Cover with Hardware & Gaskets (979-037-030R121)

MegaSquirt Metal DB37 Cover with Hardware & Gaskets (979-037-030R121) $10.50 USD

MegaSquirt MS3Pro Module F1/F2 Replacement Fuse (0451001.MRL)

MegaSquirt MS3Pro Module F1/F2 Replacement Fuse (0451001.MRL) $3.00 USD

MegaSquirt MS3Pro Ultimate & EVO F5 Replacement Fuse (045106.3MRL)

MegaSquirt MS3Pro Ultimate & EVO F5 Replacement Fuse (045106.3MRL) $3.00 USD

MegaSquirt MS3Pro Gen1 F1/F2 & MS3Pro EVO F4 Replacement Fuse (0454.500MR)

MegaSquirt MS3Pro Gen1 F1/F2 & MS3Pro EVO F4 Replacement Fuse (0454.500MR) $2.25 USD

MegaSquirt EGT Port Cap Kit – Package of 3 (EGT_0227)

MegaSquirt EGT Port Cap Kit – Package of 3 (EGT_0227) $11.49 USD

MegaSquirt EGT Clamp and Fitting (EGT_0235)

MegaSquirt EGT Clamp and Fitting (EGT_0235) $16.49 USD

MegaSquirt Replacement DB9 Female PCB Mount Connector (152-3409)

MegaSquirt Replacement DB9 Female PCB Mount Connector (152-3409) $2.49 USD

MegaSquirt GM Closed Element CLT/Oil Sensor with Pigtail (CLTIATwPiggy)

MegaSquirt GM Closed Element CLT/Oil Sensor with Pigtail (CLTIATwPiggy) $22.99 USD

MegaSquirt Replacement D-Sub Thumb Screw (160-000-050R031)

MegaSquirt Replacement D-Sub Thumb Screw (160-000-050R031) $3.00 USD

MegaSquirt Replacement DB37 Male PCB Mount Connector (152-3337)

MegaSquirt Replacement DB37 Male PCB Mount Connector (152-3337) $2.99 USD

MegaSquirt MSPNP 12 Pin Center Connector (Conn-PNP-M12)

MegaSquirt MSPNP 12 Pin Center Connector (Conn-PNP-M12) $22.49 USD

MegaSquirt DB15 Solder Cup Connector (215FE-ND)

MegaSquirt DB15 Solder Cup Connector (215FE-ND) $3.00 USD

MegaSquirt DB37 Metalized Plastic Backshell (937GME-ND)

MegaSquirt DB37 Metalized Plastic Backshell (937GME-ND) $2.99 USD

MegaSquirt MS3Pro Plug & Play 26 Pin Options Port Connector Package (Conn-PNP-N26-K)

MegaSquirt MS3Pro Plug & Play 26 Pin Options Port Connector Package (Conn-PNP-N26-K) $29.99 USD

MegaSquirt Replacement DB37 Female PCB Mount Connector (A23315-ND)

MegaSquirt Replacement DB37 Female PCB Mount Connector (A23315-ND) $5.99 USD

MegaSquirt DB15 Metalized Plastic Backshell (DB15-shell)

MegaSquirt DB15 Metalized Plastic Backshell (DB15-shell) $3.00 USD

MegaSquirt DB15 Pigtail Harness (DB15_PIG_6)

MegaSquirt DB15 Pigtail Harness (DB15_PIG_6) $23.99 USD

MegaSquirt DB26 Pigtail Harness (DB26_PIG_6)

MegaSquirt DB26 Pigtail Harness (DB26_PIG_6) $28.99 USD

MegaSquirt 3/8? NPT Stainless Steel Weld-On Bung for IAT or CLT Sensor (38NPT-BungSS)

MegaSquirt 3/8? NPT Stainless Steel Weld-On Bung for IAT or CLT Sensor (38NPT-BungSS) $12.99 USD

MegaSquirt Open Tip EGT Probe Black Stinger (EGT-Prb-4018)

MegaSquirt Open Tip EGT Probe Black Stinger (EGT-Prb-4018) $80.00 USD

MegaSquirt Coil Driver Kit (MK-CoilDrvr)

MegaSquirt Coil Driver Kit (MK-CoilDrvr) $10.99 USD

MegaSquirt Stainless Steel EGT 1/8? NPT Compression Fitting (EGT_0004)

MegaSquirt Stainless Steel EGT 1/8? NPT Compression Fitting (EGT_0004) $14.00 USD

MegaSquirt Stainless Steel EGT Weld-In Compression Fitting (EGT_0225_SS)

MegaSquirt Stainless Steel EGT Weld-In Compression Fitting (EGT_0225_SS) $15.00 USD

MegaSquirt Anti-Static ESD Protection Wrist Strap (esdstrap)

MegaSquirt Anti-Static ESD Protection Wrist Strap (esdstrap) $5.49 USD

MegaSquirt MSPNP 16 Pin Center Connector (Conn-PNP-M16)

MegaSquirt MSPNP 16 Pin Center Connector (Conn-PNP-M16) $24.99 USD

MegaSquirt MSPNPPro-E36 20 Pin Options Connector (Conn-PNP-M20)

MegaSquirt MSPNPPro-E36 20 Pin Options Connector (Conn-PNP-M20) $27.00 USD

MegaSquirt MegaSquirt-III Daughterboard Kit (MS3-DBK)

MegaSquirt MegaSquirt-III Daughterboard Kit (MS3-DBK) $299.99 USD

MegaSquirt GM Open Element IAT Sensor with Connector | Multiple GM Fitments (IATwConn)

MegaSquirt GM Open Element IAT Sensor with Connector | Multiple GM Fitments (IATwConn) $23.00 USD

MegaSquirt GM IAT Sensor with open element & pigtail | Multiple GM Fitments (IATwPiggy)

MegaSquirt GM IAT Sensor with open element & pigtail | Multiple GM Fitments (IATwPiggy) $24.49 USD

MegaSquirt MSPNP 16 Pin Center Connector (DIYPNPN76-K)

MegaSquirt MSPNP 16 Pin Center Connector (DIYPNPN76-K) $498.99 USD

MegaSquirt MS3Pro LS Plug and Play Harness Alternator Lead Extension | Multiple GM LS Fitments (HRN_MS3Ph-LSAlt)

MegaSquirt MS3Pro LS Plug and Play Harness Alternator Lead Extension | Multiple GM LS Fitments (HRN_MS3Ph-LSAlt) $26.99 USD

MegaSquirt Wiring Bundle – 8? Long (LG-WireBund)

MegaSquirt Wiring Bundle – 8? Long (LG-WireBund) $62.99 USD

MegaSquirt MicroSquirt Module Hardware Kit (MicroMod-hdr)

MegaSquirt MicroSquirt Module Hardware Kit (MicroMod-hdr) $9.50 USD

MegaSquirt Boost Control Mod Kit (MK-Boost)

MegaSquirt Boost Control Mod Kit (MK-Boost) $9.99 USD

MegaSquirt Ford Bias Resistors Mod Kit (mk-FordBIAS)

MegaSquirt Ford Bias Resistors Mod Kit (mk-FordBIAS) $3.99 USD

MegaSquirt PCB V3.57 and V3.0 HEI Input Mod Kit (MK-HEI)

MegaSquirt PCB V3.57 and V3.0 HEI Input Mod Kit (MK-HEI) $9.99 USD

MegaSquirt Pull-up Resistors Mod Kit (mk-Pullup)

MegaSquirt Pull-up Resistors Mod Kit (mk-Pullup) $3.99 USD

MegaSquirt PWM IAC Valve Control ‘Mod-Kit’ (mk-PWMIAC)

MegaSquirt PWM IAC Valve Control ‘Mod-Kit’ (mk-PWMIAC) $9.99 USD

MegaSquirt Relay Control Mod Kit (mk-RelayCtrl)

MegaSquirt Relay Control Mod Kit (mk-RelayCtrl) $9.99 USD

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