Quote:
Originally Posted by mikeo
In addition, the e90 330i has a three-stage intake manifold as opposed to the 128/328 single-stage manifold.
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The part number for the 330i intake is the same as the N51 intake. so yes it will fit. But I believe the rest of the intake needs to be modified.
Quote:
Originally Posted by Lucky1
Is the 3 stage intake manifold from the 330i a drop-in component or do other modifications have to be made to accomodate? Any ideas on the effect it has on noise? I would think as you increase the throttle it would give a deeper throatier sound which I really am not interested in.
And as for the software, who supplies this?
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As above you can order the 128i N51 intake, but no software supplier exists. Closest thing is a BMS powerbox
Quote:
Originally Posted by Lucky1
Found this link that has some details on guys trying to do a 325i conversion to 330i with the 3-stage intake manifold and some ECU reprogramming. Haven't read the whole thing yet to see their results; will do later and report back. Here it is for anyone who is interested:
http://www.e90post.com/forums/showthread.php?t=37444 |
In short, If you add a exhaust and intake to the N51, you get the most you can from the 128i. and the BMS PBX is usless at that point. To the best of my knowledge no one make a software upgrade that improve over the modification.
So I see 2 possibilities.
CAI + exhaust...... or Powerbox, but NOT both
http://www.1addicts.com/forums/showt...highlight=128i
http://www.1addicts.com/forums/showt...t=N51+powerbox