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Built off Billet Aluminum Mold
denser air
so when combined with other mufflers
installation is straightforward
Ideal for Subaru enthusiasts who want to upgrade their vehicle’s appearance without sacrificing performance
Torque Solution PNP Speed Density Kit w/ Aluminum Bung 2008-2014 WRX / 2008-2021 STI YMM_2021_VOLKSWAGEN_JETTA_GLI Built off Billet Aluminum MoldUpgrade your Subaru WRX STIs engine management with the Torque Solution PNP Speed Density Kit, designed for 2008 2014 WRX and 2008 2021 STI models. This premium kit lets you switch from a MAF to a speed density setup without cutting or splicing your OEM wiring harness, ensuring a clean and reliable installation. Perfect for enthusiasts seeking precise tuning and improved throttle response, it requires a protune to run properly. The kit includes a
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