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^not completely true. NA engines need back pressure or else you lose low end torque, obviosly not to much back pressure but you dont want straightpipes either. when i have the money to do it i plan on a 3 stage manifold swap, catless headers, and a 75 shot of nitrous. its been proven that nitrous is safe to run in the n52. is is the most cost efficient way to add power before dropping thousands on a supercharger
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