![]() ![]() While many stock exhaust systems can handle the added air from an upgraded intake, consider upgrading to a cat-back exhaust or high-flow catalytic converter, especially if you’ve already modified your engine to make more power.Ī cat-back exhaust includes everything installed after the catalytic converter, including the resonator, exhaust piping and muffler. Your system is only as big as its smallest point tight kinks in the corners will constrict exhaust flow. Equally, mandrel-bent tubing (sized to match the performance of your engine) into high-flow mufflers frees up the most flow. Long-tube or equal-length tube headers will almost always outperform a cast “log-style” manifold. More air entering the engine means more air has to exit the engine.
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