Should this oil be there?
TECH Fanatic
Joined: Jun 2003
Posts: 1,869
Likes: 99
As Trust suggested you will need a catch can, possibly two. FI cars are plumbed differently than NA cars for catch cans.
For example: ATI blocks the TB inlet from the passenger side valve cover and instead runs the hose from the valve cover to the inlet hat on the intake side of the SC. Under boost it can suck oil from the valve cover into the inlet hat, thru the charger and into the the dual intercoolers or FMIC. You do not want the intercooler(s) contaminated with engine oil. In your case a similar issue is occurring under boost - a catch can or two will catch that oil.
Here is a good read.
https://ls1tech.com/forums/generatio...v-systems.html
And this one for different installations and setups for FI with diagrams.
https://ls1tech.com/forums/generatio...outing-ok.html
For example: ATI blocks the TB inlet from the passenger side valve cover and instead runs the hose from the valve cover to the inlet hat on the intake side of the SC. Under boost it can suck oil from the valve cover into the inlet hat, thru the charger and into the the dual intercoolers or FMIC. You do not want the intercooler(s) contaminated with engine oil. In your case a similar issue is occurring under boost - a catch can or two will catch that oil.
Here is a good read.
https://ls1tech.com/forums/generatio...v-systems.html
And this one for different installations and setups for FI with diagrams.
https://ls1tech.com/forums/generatio...outing-ok.html
Last edited by dlandsvZ28; Jun 16, 2009 at 12:49 AM.
