Login
![]() |
![]() |
![]() |
![]() |
![]() ![]() |
![]() |
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
![]() |
![]() ![]() |
BMW 3-Series (E90 E92) Forum
>
2007 Engine Tech: How the N54 works (must read!!!)
![]() |
![]() |
07-22-2011, 12:11 AM | #89 |
Sergeant
![]() 315
Rep 1,654
Posts |
Does anyone know why it shows there are 2 BOV's for the N54....I may have read that wrong...when buying an aftermarket BOV, you only buy one, so the stock is just a wastegate right? or bypass valve?
|
Appreciate
0
|
07-22-2011, 02:43 AM | #90 |
Major
![]() ![]() 35
Rep 1,313
Posts |
There are two diverter valves on the N54 because it has twin turbos. There are also two wastegates by the same reason. BOV's are used to replace diverter valves if you prefer BOV's.
|
Appreciate
0
|
10-28-2011, 10:45 AM | #95 |
Private
![]() ![]() 2
Rep 83
Posts |
Some great infomation here, for anyone interested in learning about the N54/N55 or just a modern turbo charged engine. Far cry from the small block chevys/fords.
|
Appreciate
0
|
11-03-2011, 02:26 PM | #96 |
Private
![]() 0
Rep 75
Posts
Drives: E92 335i 6MT JB
Join Date: Oct 2011
Location: Redmond, Wa
|
Thanks again for the great post - super informative for a newcomer like myself.
|
Appreciate
0
|
11-12-2011, 11:00 PM | #97 |
New Member
2
Rep 18
Posts |
Ksfrogman,
Thanks for sharing this valuable information. Helps so much to know where everything is located inorder to install aftermarket parts in the likes of intercooler, blow off valves etc. |
Appreciate
0
|
12-27-2012, 01:27 PM | #108 |
Second Lieutenant
![]() 44
Rep 265
Posts
Drives: '16 340, ex e92 335, ex e46 M3
Join Date: Jan 2007
Location: North Bay Area, CA
|
FWIW
I'm the original owner of a 2007.5 coupe with the N54 that I picked up at the factory. (The mid year changes mainly consisted of extra colors and an I-Drive improvement that gives programable buttons.) I have 50K on it, and have NEVER had a problem with the engine (or anything). I got the Dinan tune (there was only one at that time, 400hp and 400 #/ft) when the car was about 4-6 months old. The car has the factory oil cooler and has been through all the factory recommended and mandatory updates for the HPFP problems. Only one of the reflashes wiped out the Dinan tune, and I had that re-installed for the cost of 45 min. labor for a Stage II tune. The bottom line is that this is the greatest car ever made! I have NEVER kept a car for more than 2-3 years, and this one is 5 years old. I'm starting to get the new car itch, but other than a very few minor things, there is nothing out there better, and I will probably keep it. My experience says: "If you're thinkiing of keeping your N54 beyond 30-40K, do it. If you're thinking of buying used, do it. Don't worry about the OLD bad rep." YMMV |
Appreciate
0
|
![]() |
Bookmarks |
Thread Tools | Search this Thread |
|
|