![GPF-back Exhaust - EC Approved [Puma ST] Fit at HQ:No 00mmThickness: 0](https://cdn.shopify.com/s/files/1/0367/2621/files/PUMA_ST_EXHAUST_02.png?v=1752834781)
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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
00mmThickness: 0
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A perfect pairing with mountune Forged Pistons
The ECUtek app allows you to easily DIY install and update calibrations to your ECU using nothing more than our app
m330 SMARTflash includes three calibrations
GPF-back Exhaust - EC Approved [Puma ST] Fit at HQ:No 00mmThickness: 0The mountune GPF back exhaust for the Puma ST gives the 3 cylinder EcoBoost a much more befitting soundtrack, while reducing back pressure and enhancing vehicle aesthetics. Constructed from 70mm 304 stainless steel, the mountune GPF back system improves vehicle performance thanks to its low back pressure design. The carefully engineered muffler features a Helmholtz resonator, ensuring the cabin remains free from unwanted drone or boom. The exhaust is