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Old 05-28-2012, 11:11 AM   #9 (permalink)
bleufiend
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Rally, I havent looked into much of tuning aspects of the n54vsn55. I work on them daily and the N55 fixed alot of the N54's teething problems like the hdp pump, replacing the piezo injectors with solenoid injectors and overall a simpler engine design than the n54. Its easier for me to get to stuff on the N55 than the N54 and weve just had less problems than the N54.

Also and I know some might find this goofy but I love the sound that the N55 with the single turbo(dont know what Im talking about go you tube it) and for me the N55 seems to have less turbo lag then the N54. If you have an automatic then you wont really feel the lag difference too much but in a manual trans its aggravating as hell. A simple tune or plug and play chip would probably fix it but I havent read up to much on that.

Another point, you cant get a N54 with a DCT trans which is the trans I prefer unless you get a sdrive35 Z4 or a 335is which Im not considering either because the Z4 has no back seat obviously and the 335is is so friggin overpriced that you should just get a M3 and be done with it.
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Last edited by bleufiend; 05-28-2012 at 11:13 AM. Reason: fixin my grammar :P
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