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Originally Posted by jntar
Yes, the extra horsepower came from the three stage manifold and different ECU tuning.
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Thank you all for the clarification.
So this begs a couple additional questions. Stage 1 = intake/exhaust?
Stage 2= Ecu/flash and or tune?
Stage 3 -Manifold swap, when performing this stage is there a specific BMW Manifold that is used?
What is the average price of performing all three stages and HP gains?
Thanks in advance.