Haltech Nexus S2 ECU & Subaru STI | Subaru STI NON-USDM & more 2006-2007 Plug 'n' Play Adapter Harness Kit (HT-651106)

This Tuned By Shawn plug-and-play kit (HT-651106) pairs the Haltech Nexus S2 ECU with the matching Boomslang adapter harness (BF29114) for the 2007 Subaru STI, 2006-2007 Subaru STI NON-USDM and 2006-2007 Subaru WRX (GD chassis) with a manual transmission. The harness plugs into the factory engine harness where the stock ECU connects, so the Nexus S2 takes over full standalone engine management with no cutting, splicing or repinning.

Vehicle Fitment

• 2007 Subaru STI (manual transmission)
• 2006-2007 Subaru STI NON-USDM (manual transmission)
• 2006-2007 Subaru WRX (manual transmission)

Boomslang part number: BF29114. 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 S2 ECU, and the Boomslang harness is built for its connectors.

Features

• Vehicle-specific plug-and-play fitment for the 2007 Subaru STI, 2006-2007 Subaru STI NON-USDM and 2006-2007 Subaru WRX
• 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 S2 ECU plus the matching harness in one order

What's in the Box

• 1x Boomslang plug-and-play wiring harness (BF29114) for the 2007 Subaru STI, 2006-2007 Subaru STI NON-USDM and 2006-2007 Subaru WRX
• Haltech Nexus S2 ECU
• Haltech air temperature sensor, small thread (M14 x 1.5)

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-651106 fit?

The 2007 Subaru STI, 2006-2007 Subaru STI NON-USDM and 2006-2007 Subaru WRX 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.