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Originally Posted by X5girl
I would love to know how creating turbulent flow into the inlet manifold plenum, way before the air is mixed with the fuel would improve mixture. This may have worked on an old carburettor engine but not on a modern multi-point injected engine.
X5Girl, xxx
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i actually would love to know as well. i don't know much about the how.. which is also why i started this thread. i have a friend who put a throttle body spacer on and claims feeling a difference; i just wanted to hear BMW owner's thoughts.