Drivetrain BOV
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#13
Good question! The cliff notes version is that it removes the excess pressure built up behind the turbo and the throttle plate during a shift. The larger ALTA version allows MORE pressure to be released. If excess pressure is allowed to be there and not relieved then over time damage can occur to the turbo. From a performance stand point relieving the pressure allows for faster re-spool time during gear changes.
Thanks for asking!
Thanks for asking!
#18
#19
Can anyone use RealOEM to show me where this diverter valve is?
http://www.realoem.com/bmw/partgrp.d...31&hg=11&fg=05
http://www.realoem.com/bmw/partgrp.d...31&hg=11&fg=05
#21
The Forge unit allows the mini computer to do it thing and works very nice, had one since day one. The ALTA unit according to the docs go onto the noise maker tube and required tapping into the intake manifold. I would change the docs and use the ALTA vac/boost adapter spacer and tap the vac/boost pressure that way and DO NOT drill anything (great for warranty issues).
Between the two above units, the Forge installs real quick, done one in less than 30 minutes and meets the goal of reducing pressure. The ALTA unit is nice and adjustable (if you know what you are doing), but does take longer and requires more things to be taken apart to get it in. Each has their benefits depending on your technical expertise
So far, my dealer has had nothing to say about the Forge unit (since it is invisible when installed) and the shop folks love the sound and increased response
Cheers.
#22
Can anyone use RealOEM to show me where this diverter valve is?
http://www.realoem.com/bmw/partgrp.d...31&hg=11&fg=05
http://www.realoem.com/bmw/partgrp.d...31&hg=11&fg=05
http://www.realoem.com/bmw/showparts...44&hg=11&fg=50
It is item #2, The dirverter unit is computer controlled.
#23
Look here:
http://www.realoem.com/bmw/showparts...44&hg=11&fg=50
It is item #2, The dirverter unit is computer controlled.
http://www.realoem.com/bmw/showparts...44&hg=11&fg=50
It is item #2, The dirverter unit is computer controlled.
#24
Not to diss Alta and all their hard work
but all together the best sounding blow off valve EVER
http://www.youtube.com/watch?v=VbNxugO-uf0
Just kidding
http://www.youtube.com/watch?v=M2--IIMSa9A
I am really digging the anti Poooshhhh
http://www.youtube.com/watch?v=J9CKLSjBzL8
http://www.youtube.com/watch?v=VbNxugO-uf0
Just kidding
http://www.youtube.com/watch?v=M2--IIMSa9A
I am really digging the anti Poooshhhh
http://www.youtube.com/watch?v=J9CKLSjBzL8