Haltech Nexus T1 ECU & Toyota Tacoma 2RZ-FE | Toyota Tacoma 3RZ-FE & more 1997-2000 Plug 'n' Play Adapter Harness Kit (HT-650908)

This Tuned By Shawn plug-and-play kit (HT-650908) pairs the Haltech Nexus T1 ECU with the matching Boomslang adapter harness (BF29169) for the 1997-2000 Toyota Tacoma 2RZ-FE, 1997-2000 Toyota Tacoma 3RZ-FE and 1997-1999 Toyota 4Runner 3RZ-FE (2RZ-FE and 3RZ-FE four-cylinder engines) with a manual transmission. The harness plugs into the factory engine harness where the stock ECU connects, so the Nexus T1 takes over full standalone engine management with no cutting, splicing or repinning.

Vehicle Fitment

• 1997-2000 Toyota Tacoma 2RZ-FE (manual transmission)
• 1997-2000 Toyota Tacoma 3RZ-FE (manual transmission)
• 1997-1999 Toyota 4Runner 3RZ-FE (manual transmission)

Boomslang part number: BF29169. Confirm your model year, engine and transmission before ordering. Similar-looking vehicles often use a different factory ECU connector or pinout and need a different harness.

ECU Included

This kit includes the Haltech Nexus T1 ECU, and the Boomslang harness is built for its connectors.

Features

• Vehicle-specific plug-and-play fitment for the 1997-2000 Toyota Tacoma 2RZ-FE, 1997-2000 Toyota Tacoma 3RZ-FE and 1997-1999 Toyota 4Runner 3RZ-FE
• Plugs into the factory engine harness with no cutting, splicing or repinning
• Factory harness is left untouched, so the install is fully reversible
• OEM-style connectors and correct wire gauge throughout
• Built in the USA by Boomslang
• Complete kit: Haltech Nexus T1 ECU plus the matching harness in one order

What's in the Box

• 1x Boomslang plug-and-play wiring harness (BF29169) for the 1997-2000 Toyota Tacoma 2RZ-FE, 1997-2000 Toyota Tacoma 3RZ-FE and 1997-1999 Toyota 4Runner 3RZ-FE
• Haltech Nexus T1 ECU (HT-210000)
• Haltech air temperature sensor, small thread (M14 x 1.5)

Why the Nexus T1

The Nexus T1 is Haltech's entry level standalone ECU, successor to the Elite 550, bringing modern Nexus platform technology to budget minded builds:

• 4 x fuel injection and 4 x ignition outputs
• Internal 4 Bar MAP sensor, ready for boost
• Closed loop O2 control with long term learning (with optional CAN wideband controller)
• 4D closed loop boost control and flex fuel support
• Variable cam control for up to 2 camshafts
• Launch control, traction control, anti-lag and flat shift
• 32MB onboard logging plus a 4-channel onboard oscilloscope
• CAN connectivity for Haltech dashes, keypads and expansion devices
• WiFi and USB-C communication in an IP-66 waterproof case
• Fully enabled from the box with no extra feature unlock charges

Important Notes

Manual transmission vehicles only. The Nexus T1 does not support drive-by-wire throttle control. Emissions notice: Haltech products are designed and sold for sanctioned off-road and competition non-emissions controlled vehicles only. It is the responsibility of the installer and user to ensure compliance with all applicable local and federal laws.

Why Buy From Tuned By Shawn

Tuned By Shawn is a Platinum Haltech dealer specializing in ECU engine management, plug and play wiring solutions and remote tuning. Not sure this kit is right for your build? Email service@tunedbyshawn.com before you order, Shawn answers these himself. Want it dialed in after install? Ask about live remote tuning sessions and we will take your build from base map to dyno-proven.

Frequently Asked Questions

Does this kit require cutting the factory wiring?

No. The Boomslang harness plugs into the factory engine harness connectors, so the stock wiring stays intact and the vehicle can be returned to stock.

Which vehicles does HT-650908 fit?

The 1997-2000 Toyota Tacoma 2RZ-FE, 1997-2000 Toyota Tacoma 3RZ-FE and 1997-1999 Toyota 4Runner 3RZ-FE with a manual transmission.

Does it need a tune after installation?

Yes. A Haltech standalone ECU must be calibrated for your engine and modifications before the vehicle is driven. Tuned By Shawn offers remote and in-person Haltech tuning. Email service@tunedbyshawn.com with any fitment questions before you order.

For off-road and competition use only. Not legal for use on pollution-controlled motor vehicles.