All EFI kit orders have a 3-4 week lead time.
Our first harness outside the Toyota world, built for the SR20DET.

This kit is a complete engine harness built in-house at SNP Speed Innovations and paired with your choice of Haltech Nexus ECU. It ships with all-new engine connectors, so you don’t need a donor harness, and your ECU comes pre-loaded with an SNP startup tune so you’re ready to fire it up.

The SR20 harness was bench tested before release. We used a drill-spun factory Nissan CAS for the RPM signal and noid lights on every injector output, and it passed.

Choose your ECU

Haltech Nexus T1: Haltech’s entry-level single-connector ECU. 4 injector and 4 ignition outputs, internal 4 bar MAP sensor, onboard data logging, boost control and launch control. The right fit for a straightforward 4-cylinder build.
Haltech Nexus S2: The step-up ECU and successor to the Elite 1500. Adds an on-board wideband controller, more outputs and inputs, and the processing power of the Nexus platform. For builds that need the extra I/O.

What’s included

SNP SR20DET engine harness, built in-house
Haltech Nexus T1 or Nexus S2 ECU with SNP startup tune
New engine connectors throughout
Wideband O2 sensor for closed-loop correction and internal data logging

Fitment

Engine: SR20DET, blacktop and redtop
SR20DET S13 (left hand drive only)
SR20DET swaps in any chassis (left hand drive only)
Manual transmission only

This kit is designed for off-road use and is not emissions compliant.

How ordering works

After checkout, fill out our EFI order form. We use your build details to program the startup tune before the kit ships.

Support

Every kit comes with remote tech support from the SNP team. Need it fully dialed in? Remote tuning is available. Book a tuning session

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SR20DET Complete Harness Kit with Haltech ECU