The Tire Rack
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Questions re multi-stage air intake geometry?

Thread Tools Search this Thread
      07-29-2006, 09:08 AM   #1
Enlisted Member

Drives: E90 325i SE Saloon
Join Date: Nov 2005
Location: Bristol, GB

iTrader: (0)

Questions re multi-stage air intake geometry?

I understand the 330i E90 (both US & European spec) has a variable, multi-stage air intake manifold (designed to give an improved, more even torque throughout range of engine speeds).

Likewise the 325i (but only in Europe, not the US 325i).

I believe there are a few different channels/paths for the air to flow through, and some actuators open/close the channels accoridng to engine rpm.

Think the old E46 had a two-stage intake, but believe the E90 has a three or four stage intake.

Can anybody shed any further light on how this all works?

And does anybody know at what enginre rpms's the multi-stage intake changes the air path on the 6-cylinder E90's?
Appreciate 0


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -4. The time now is 12:24 AM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST