Is it bad running NO VACUUM LINES TO THE EGR SYSTEM WITHOUT BLOCKING EGR OFF?

[MarkAngelo05]

Hi,

When I changed my head, I forgot to take pictures of how the vacuum lines were off the 3 ports on top of the throttlebody. Well, I've been running it with those 3 ports capped off, but my EGR is not blocked off.

I'm not sure if I should just spend the couple hours trying to re do the whole vacuum line system so that my EGR works properly, or should i just leave it alone??

Now, could my EGR be leaking? Specially under boost, since I don't have any vacuum lines going to it?

I've been running it like this for about 8k miles.. and also dynoed like this..


Thanks!

Mark

 

[fourreGsixty3]

If your not worried about emmision's then spend $20, and take 5 minutes to buy a block off plate and remove the EGR. It should not be opening at all since the vacuum lines aren't hooked up to put vacuum on the diaphram inside the EGR valve. I can't say for sure if it will leak or not later down the road, but either hook them back up, or block it off.

 

[Defiant]

http://www.dsmtuners.com/forums/showthread.php?t=188631

 

[MarkAngelo05]

Thanks Defiant, I remember seeing that thread.. I was just wondering if leaving it alone and not even blocking it off, or redoing the vacuum lines has been okay and not having a negative impact on my setup.

To my understanding, the EGR operates on part throttle cruise conditions and it is opened by a VACUUM SOURCE. But, there is a posibility that It leaks when under high boost, specially when no vacuum lines are going to it.

I'm just going to spend the time to re do the vacuum lines for the EGR sometime this weekend.

 

[fourreGsixty3]

Yes the EGR work's off vacuum, and off idle condition's...the EGR does not operate at idle, cold start-up's, or WOT. As far as it leaking that would just be us guessing...I would say do a boost leak test, and put a few psi in the system then you run using your turbo, and listen for the EGR leaking.

 

[6bolt2gdsm]

Might want to keep that EGR valve around, its not actually a bad thing a plus to having it, is that it reduces chances of detonation