PERFORMANCE TURBO MANIFOLDS FOR AUDI 2.7L S4 (B5) AND A6/ALLROAD (C5) A performance tuned turbo manifold ensures quicker and smoother flow of exhaust air to increase engine output and efficiency. Vacating exhaust air faster allows more intake air into engine cylinders for better combustion. Moreover, having separate ports and tube paths for each cylinder eliminates interference between exhaust pulses and thus reduces backpressure. This product contains a pair of manifolds engineered specifically for the 2.7L V6 Bi-Turbo Audi S4 (B5) and A6/Allroad (C5). It features a 3 into 1 design, mandrel bent tubing constructed from high quality 304 stainless steel, and smooth TIG welds on joints both externally and internally, all of which instantly unlock an output increase of 10-20hp.
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