[1SerieStud]

Originally Posted by Harlequin

Perhaps you should "Educate" yourself on the N55 Engine...



From here: http://www.n54tuning.com/index.php?_...d&productId=96

Up until now there hasn't been a way to add a BOV to the N55 Engine.

However, I just found this and it looks interesting...

http://www.**********s.com/Evolution...e-Pipe-N55.htm

[IMG]http://www.**********s.com/images/Products/EvolutionRacewerks/mini-n55chargepipe2a.jpg[/IMG]

really? Please show me ANY car with an OEM (plastic) BOV/diverter valved mounted to the turbo. It will probably last a full 5-10 minutes under WOT/full boost before it turns to lava. I don't want to make an argument out of this, but if you notice the part that they are referring to, as well as the replacement part, they are both pipes. There is no way, I repeat, NO WAY that a BOV can be mounted to a turbo and that it would withstand the high temperatures in order to function normally.

I don't know who you quoted up there since there is certainly no reference to the original poster, but that is rather inaccurate.

Now to further the education here, the main reason for which an N55 has not been able to use a BOV is the presence of a MAF (mass airflow sensor) - which the N54 motor does not have. This forces the N55 to recirculate whereas a BOV on the n54 motor can be vented to the atmosphere without any side effects such as running rich in between shifts.

I'm very familiar with the N55 motor - drove a '11 135i for a year and a half before switching to my 1M.