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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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Old 12-27-2012, 05:54 PM
06 325i 06 325i is offline
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Location: connecticut
Join Date: Dec 2012
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Mein Auto: 325i
325i engine swap

hello i was wondering if someone could give me some advice, I have a 2006 325i, and wanted to swap the engine for somthing else, i was looking at the 06-07 335i engine, does anyone know if this will fit, and if not what would be a good engine to swap it with.
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Old 12-27-2012, 09:17 PM
Orient330iNYC's Avatar
Orient330iNYC Orient330iNYC is online now
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Location: Wall St
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Mein Auto: Daihatsu Terrios
anything other than the stock engine will be very expensive to retrofit. forget the twin turbo N54.
even the engine out of a 330i will be difficult. you would need to find some way to reprogram the car to be able to control the new engine. it is not just a drop in replacement.
Past: 2001 330i ZSP/ZPP/Step
Past: 2004 S60R 6MT Sport
Past: 2007 335i 6MT ZSP/ZCW/322/655
Past: 2010 335xi ZMP/ZCW/ZPP/PPK/PE
Present: 2013 335i 6MT ZMM/ZDH/ZTP/3AG/494/508
On Order: 2016 F34 335i xDrive ZCW/ZDA/ZDH/ZTP/ZMP/2V5/5DL

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Old 12-28-2012, 09:47 AM
ctuna ctuna is online now
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Location: usa
Join Date: Jan 2010
Posts: 2,836
Mein Auto: 325xi wagon
You can change it into 330 without changing engine.

You can change it into 330 without changing engine.(might be worth it)
In other country's they make supercharger kits but its not worth it.

What can be done



Engines are very expensive like airplane engines on these.
Think 15k for a new engine installed so if you mess with it you are really gambling a lot.

Last edited by ctuna; 12-28-2012 at 11:13 AM.
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Old 12-28-2012, 11:36 AM
Squidget Squidget is offline
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Location: Boston
Join Date: Jul 2011
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Mein Auto: 2011 335i E90 (MT,Sport)
Random question: is there EVER a time where an engine swap makes sense for E90s?

Every time I've seen this question, the answer has been one of these:

No, because swaps are hella expensive. It's cheaper to sell your car and buy another one with the engine you want.

No, because it's cheaper to tune the engine to get the numbers you want.
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