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Bye-bye N54 ? 2011 335i and 135 to get the N55 engine...
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01-11-2010, 05:20 AM | #1 |
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Bye-bye N54 ? 2011 335i and 135 to get the N55 engine...
Should we cry ? Or should you grab your N54-powered car while you can ?
http://www.bimmerfile.com/2010/01/10...35i-to-follow/ The problem is that BMW's engine lineup is so confusing it hurts... So the z4 sDrive 35is has a 335hp/340hp N54 engine and was just launched, and a 335is in on the way. Will the 335is have a further tuned N55 engine (to exceed the regular 300hp), or the already tuned N54 from the z4 35is ? God knows...I bet on the N54 to remain the more performance-oriented and to power the upcoming 335is/135is because otherwise they would have launched the Z4 sDrive 35is with the N55.
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01-11-2010, 06:49 AM | #2 |
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The N55 will be a valvetronic, single-turbo engine, the N54 is more a "classic" bi-turbo engine. My guess is that the N54 is quite overbuilt, it has been the first petrol BMW turbo engine since more than 2 decades. It's said that this engine has been developed and tested as an alternative for the current M3 ( ~380 - 400 bhp ). We all know that the N54 works well at 400-450 whp. As of today nobody knows whether the N55 will be downsized related to engine block / internals.
My 2 cents. |
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01-11-2010, 06:52 AM | #3 |
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One sad fact is it takes a long time for parts to become available to mod cars. If you jump ship then be prepared for years before you get to where the N54 is right now.
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01-11-2010, 07:16 AM | #4 |
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May keep my coupe after all, till next Ms are released.
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01-11-2010, 07:37 AM | #5 |
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Drives: '08 E90 335i, '99 E36 M3
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Keeping my N54 until the TT V8s come out.
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01-11-2010, 10:38 AM | #7 |
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01-11-2010, 10:49 AM | #8 |
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The E9x models will continue to use the N54 engine, in a higher state of tune taken from the Z4 sDrive35i.
The N55 engine will be used in new platforms only as it requires a considerable change to the ancillary hardware and mounting components, which would be too costly to implement in a car that is in reality coming towards the end of its life cycle. Furthermore, the N55 engine will prove more difficult to modify, given the implementation of Valvetronic, the fact the turbo is now a dual-scroll single-unit as opposed to a true twin-turbo setup, and also the fact that the ECU is half moulded into the intake housing, thereby making modifications to the intake system exceptionally difficult.
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01-11-2010, 10:55 AM | #9 | |
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Were saved!!!!!!! |
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01-11-2010, 11:04 AM | #11 |
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Wow...they really take tuning threats seriously. Can you explain more ? By intake housing you mean airbox ?
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01-11-2010, 11:05 AM | #12 |
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The new 7-series came out 6 months ago and indeed, with the N54...
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01-11-2010, 11:10 AM | #13 |
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one of the most difficult is that N55 has an air mass flow meter and valvetronik so nearly impossible to tune with piggy only flash will do it
The DME is bolted to the intake manifold and uses a special sealed connector... difficult for a JB3 pinout to survive directly in the engine bay |
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01-11-2010, 11:16 AM | #14 |
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Drives: '08 E90 335i, '99 E36 M3
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01-11-2010, 01:37 PM | #17 |
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When will the N54 w/DCT 335is be available? will it be e92 only? Im getting so confused with all these different versions coming out!
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01-11-2010, 04:01 PM | #18 |
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01-11-2010, 04:17 PM | #20 | ||
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01-11-2010, 04:27 PM | #21 | |
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Imagine paddle-shifting an 8-speed auto
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01-12-2010, 08:48 AM | #22 |
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I am holding out for the 2012 M3 which I was under the impression was coming with a V6 TT (I6 would be better IMO but either way). It will either be that or converting my 335i into a lighter and more powerful ST car. I am kinda in limbo atm waiting for one or the other (or both) so I can decide. That is why I don't want to waste time/money upgrading any TT components on this 335i (like DP's, exhaust, turbos, etc.). SSTT + AMS FMIC is all I have and it gets me by.
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