how are you guys routing vented opti spark with boost

**supr67** · 03-26-2014, 11:59 AM

So as it says I have a vented option spark on my boosted lt1 what are you guys doing with the vacuum lines ???

**shownomercy** · 03-26-2014, 12:02 PM

Run it stock style to intake?

**supr67** · 03-26-2014, 12:38 PM

Originally Posted by shownomercy

Run it stock style to intake?

wouldnt the boost pressure be bad of the opti ??

***Fastbird*** · 03-26-2014, 02:19 PM

That's what the check valves are for.

Posted from my LG G2

***popo8*** · 03-26-2014, 03:58 PM

Originally Posted by Fastbird

That's what the check valves are for.

Posted from my LG G2

agreed.

LTXtech.com is my DRUG!

**Injuneer** · 03-27-2014, 09:45 AM

Just remember not to install the air supply line (blue elbow) in a pressurized location. Put it on the suction side of the blower, or you will pressure the Opti case. No check valves in the air supply line from the intake elbow to the Opti.

**dawdaw** · 03-27-2014, 04:45 PM

smart man ^^^^

**sleepy_z** · 10-19-2014, 03:45 PM

Originally Posted by Injuneer

Just remember not to install the air supply line (blue elbow) in a pressurized location. Put it on the suction side of the blower, or you will pressure the Opti case. No check valves in the air supply line from the intake elbow to the Opti.

Hey guys, I'm confused on where to put the opti vac lines and where not to have check valves. I have a modified sts kit so I don't have the stock intake tube.
Any help would be greatly appreciated.

**firebird_1995** · 10-19-2014, 07:51 PM

On a boosted setup you need to pull fresh air from the intake side of the turbo (after the filter, before entering turbo). Since your turbo is in the back of the car you'll either have to run a supply line all the way back there and put the check valve on the return line between the intake vacuum port and opti cap or you can put the fresh air supply in the charge piping (before the maf) with a check valve between it and the opti with a small breather/filter on the other line off the Opti cap. This way when youre not in boost (probably 90% of the time) it will draw air into your breather/filter, through the cap, and into the engine. Under boost the check valve prevents air from entering the cap. If you put a breather/filter on one end, mount it away from where water could get to it obviously.