M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => General Topics => Topic started by: bbarnumboy on December 16, 2010, 08:22:36 PM

Title: ITB vacuum lines
Post by: bbarnumboy on December 16, 2010, 08:22:36 PM

1. Wondering if the vacuum lines for the throttle bodies itself is necessary for proper idle? If so how did you guys set yours up?

2. for those who have done an itb setup, how did you incorporate the ICV?

keep in mind (although it shouldn't matter at idle) that i am going supercharged as well.

Title: ITB vacuum lines
Post by: bbarnumboy on December 17, 2010, 06:09:30 PM

ok so pretty much my question is, can i just use the vacuum ports on the itbs and get rid of the ICV? or do i need to incorparate it?

also how did oyu guys incorporate the brake boster line?  you have to use a vacuum block?

Title: ITB vacuum lines
Post by: Massimo on January 04, 2011, 07:48:29 PM

How are you setting up your ITB's as in do they connect to a intake manifold or do you just have the trumpets to atmosphere?

If you are running them with a intake manifold then you should just need to tap into the area around the intake near the filter and run your vacuum lines from that, someone correct me if I am wrong.

If you do not have the manifold then this a bit more involved you will need to install an after market engine management like mega squirt and run a MAP sensor. This way you do away with the ICV and vacuum hoses.

This is how I understand it works but if someone could please confirm this that would be great.

Hope this helps a bit.