Vortech vacuum help

[thereturn]

Trying solve this puzzle asking for some advice thanks in advance for any guidance.

recently installed a vortech kit on my 2019 and wanted to run the blower without intake tube. I was trying to clean up vacuums since most the hoses get connect to intake tube. Blocked off vacuum 2 and vacuum 1 is connected to brake booster Now brakes have pressure. How can this be set up correctly?

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[Jackson1320]

I’m not 100% clear about what you are trying to say. But if you mean that you did away with all the vacuum lines that you are not using then I did the same thing. Now if you mean that your brake booster is seeing boost pressure at wot that is because you have to install a check valve between your brake booster and the vacuum source. If you mean that you’re brake booster is not getting vacuum then something is blocking it like a backwards check valve or obstruction or you have it on the wrong vacuum port. They are not all the same. You can not use the one on the back of the manifold. Use the same port it used stock

 

[Vegas5OH]

i just installed a vortec on an 18 without the tube, i re used the stock aspirator and master cylinder line, just capped off the one port on it. Then ran a vented catch can.

 

[Jackson1320]

i just installed a vortec on an 18 without the tube, i re used the stock aspirator and master cylinder line, just capped off the one port on it. Then ran a vented catch can.

There’s your problem. You’re not getting vacuum because of the catch can. You need to find vacuum for the Catch can somewhere else

 

[Jackson1320]

You cannot run in Catch can like that you will not have any vacuum for your brakes and under boost it will be one hell of a a leak straight into the crank case. You want your brakes to be under negative pressure the catch can is going to prevent that from happenin. they constantly flow air so you can’t get that negative pressure. Your brakes need to be on a source that is under vacuum. Your catch can needs to be on a separate source and have a check valve (pcv) in it so it can’t blow into your crank case.

If it ran at all I bet ran like crap

 

[Jackson1320]

What is on the other valve cover where the vent was?

 

[Vegas5OH]

The car i did has no issues the catch can is not connected to vac the mani is capped, and the can is vented.

 

[Jackson1320]

The car i did has no issues the catch can is not connected to vac the mani is capped, and the can is vented.

That is not what the picture you posted shows

 

[Jackson1320]

The car i did has no issues the catch can is not connected to vac the mani is capped, and the can is vented.

Anyway. I would try hooking up to a different vacuum port and see if that fixes the brakes

 

[Jackson1320]

It looks like you are coming straight from the intake manifold to the brake booster. If you are then there has to be a check valve or you will put boost pressure in the brake booster and damage it

 

[thereturn]

Just an update first picture for reference is the proper way, I capped vacuum 1 and ran vacuum 2 to booster it everything worked as it should , I emailed the logs to the tuner everything looked good. There was p0446 evaporative code but was all addresses with A new updated tune

 

[Jackson1320]

When I installed a 18 manifold I got rid of evap and pcv. Then removed port 2 completely and installed a iat sensor there. Connected the brake booster to the evap port. Port 1 I use as boost reference for my waistgate and water/meth controller

 

[KMartin_301]

When I installed a 18 manifold I got rid of evap and pcv. Then removed port 2 completely and installed a iat sensor there. Connected the brake booster to the evap port. Port 1 I use as boost reference for my waistgate and water/meth controller

Could I run a line from vacuum port 2 to brake boooster but tee it off to a vacuum block?

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