Quote:
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Originally Posted by BimmerBri
Quote:
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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. |
You will need an intake off of a 330i, z4 si, 530i, or x3/5 si. The average price for a used manifold is around $3-500 from car-part.com. New from a dealer youre looking at $1k.
The tune will cost you between $500-800 depending on your location and exhaust you can price online.
Average gains for everything is hard to say. some people gain 30hp and some 45-50hp. All the mods listed should net you atleast up to the 330i spec.