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AIRTEC Motorsport Performance Tubular Exhaust Manifold Upgrade Ford Fiesta ST180 | eBay
AIRTEC part no: ATMSFO25. The standard manifold will be finding it hard to release the air with the manifold pressure not being able to cope wit hthe power. A tubular manifold has a massive increase in air flow which could see big gains compared to standard. | eBay!
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