Great thread guys! So just to be clear, it's not agreed that S63TU manifolds will can simply be swapped in with some machining for power benefits, as the cross bank design will throw off the O2 sensor map algorithm?
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Loved and lost: 07 E92 M3 Silverstone II / 96 E36 M3 Evo Estoril Blue / 07 E84 Z4 M Coupe Interlagos Blue
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