Torque Solution
Torque Solution 08-14 Subaru WRX / 08-21 STI PNP Speed Density Kit
Torque Solution 08-14 Subaru WRX / 08-21 STI PNP Speed Density Kit
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Torque Solution PNP Speed Density Kit allows you to easily switch from MAF setup to Speed Density without having to hack up your OEM harness. Our adapter harness makes the kit a direct plug and play setup with no wire cutting or splicing required!! Requires the provided bung for the IAT sensor to be welded either on the throttle body side of your TMIC (choose location and mark TMIC before removing it) or on your FMIC upper charge pipe right before the throttle body.
- Plug and Play Adapter Harness
- Direct Fit
- Waterproof Connectors
- 39" Length
- High Temp Wire Loom
- Fast Response IAT Sensor
- Aluminum IAT Weld-On Bung
- 1 Year Warranty
Includes:
- Torque Solution GM Style IAT Sensor- Torque Solution IAT / Speed Density Pigtail Harness
- Torque Solution Weld Bung: 3/8" (-18) NPT Female Aluminum
- *Protune required to run a speed density setup.
Fits:
- Subaru WRX 2008-2014 (USDM/JDM)
- Subaru WRX STi 2008+ (USDM/JDM)
Vehicle Fitment
- 2008-2011 Subaru Impreza WRX STI
- 2012-2014 Subaru WRX
- 2013-2021 Subaru WRX STI
Please verify exact fitment for your trim and engine before ordering.
Manufacturer Part Number: TS-WH-499PA
Images are for illustrative purposes only. Actual product may vary.
⚠ WARNING (California Proposition 65): This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
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Manufacturer's Warranty — Torque Solution
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Manufacturer's Warranty — Torque Solution
Torque Solution states a Limited Lifetime Warranty on its manufactured billet aluminum and polyurethane parts — engine, transmission and differential mounts, shifter and suspension bushings, blow off valve adapters, exhaust hangers, flanges and fittings. Its electronic parts (Fast Response IAT sensors and PNP speed-density adapter harnesses) carry a 1-year warranty instead. Wear and consumable items — turbo blankets, intake gaskets, exhaust wrap and heat tape — are sold without a stated warranty term. Coverage applies to the original purchaser against manufacturing defects; check the individual product listing for the term that applies to that part.
Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by Torque Solution. Contact us if you need help with a warranty claim.

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