Boost controller vacuum routing for twins? - LS1TECH - Camaro and Firebird Forum Discussion

Notices
Forced Induction Superchargers | Turbochargers | Intercoolers

Boost controller vacuum routing for twins?

Reply

Old 04-17-2018, 12:46 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (13)
 
MM98's Avatar
 
Join Date: Dec 2003
Location: Okc,OK
Posts: 1,438
Default Boost controller vacuum routing for twins?

Which one of these would you guys recommend? Im running an AEM true boost with a single 3 port solenoid & they don't show any diagrams with a twin set-up. Not sure how the first one would be able to let me up the boost with the tops of the gates vented. Thanks!
Attached Thumbnails Boost controller vacuum routing for twins?-pic.jpg   Boost controller vacuum routing for twins?-pic2.jpg  
MM98 is offline  
Reply With Quote
Old 04-17-2018, 12:56 PM
  #2  
TECH Fanatic
 
svslow's Avatar
 
Join Date: Oct 2015
Location: Royal Oak, MI
Posts: 1,118
Default

I prefer the diagram on the right. My twin set up was plumbed like that. It would make 10psi on the gates and I could get 25-26psi at only 60% DC on the controller.
svslow is online now  
Reply With Quote
Old 04-17-2018, 01:42 PM
  #3  
TECH Fanatic
Thread Starter
iTrader: (13)
 
MM98's Avatar
 
Join Date: Dec 2003
Location: Okc,OK
Posts: 1,438
Default

Sorry, my screen shows top/bottom pics. So if you're saying the one on the right, would that be the one that has the solenoid out going to the top of the wastegates?
MM98 is offline  
Reply With Quote
Old 04-17-2018, 01:55 PM
  #4  
TECH Fanatic
 
svslow's Avatar
 
Join Date: Oct 2015
Location: Royal Oak, MI
Posts: 1,118
Default

Originally Posted by MM98 View Post
Sorry, my screen shows top/bottom pics. So if you're saying the one on the right, would that be the one that has the solenoid out going to the top of the wastegates?
Correct. Solenoid regulates the air going to the top of the gates.
svslow is online now  
Reply With Quote
Old 04-17-2018, 01:59 PM
  #5  
TECH Fanatic
Thread Starter
iTrader: (13)
 
MM98's Avatar
 
Join Date: Dec 2003
Location: Okc,OK
Posts: 1,438
Default

Awesome, thanks for the help!
MM98 is offline  
Reply With Quote
Old 04-17-2018, 07:04 PM
  #6  
9 Second Club
 
Join Date: Nov 2003
Location: Norn Iron
Posts: 11,274
Default

The config with the top chamber open to atmosphere is the simplest method of boost control. Unless you need a wide range or a lot of boost, then this is by far the easiest option.

And there is no reason any part of the boost control system should ever see vacuum
stevieturbo is online now  
Reply With Quote
Old 04-17-2018, 08:34 PM
  #7  
TECH Fanatic
Thread Starter
iTrader: (13)
 
MM98's Avatar
 
Join Date: Dec 2003
Location: Okc,OK
Posts: 1,438
Default

Originally Posted by stevieturbo View Post
The config with the top chamber open to atmosphere is the simplest method of boost control. Unless you need a wide range or a lot of boost, then this is by far the easiest option.

And there is no reason any part of the boost control system should ever see vacuum
Can you explain how the boost controller would be able to add pressure on the spring if the top is vented? Sorry, Iím still learning the electric controllers and dont need a ton of boost, maybe double the current spring pressure which is 10lbs. And yes, I should have tittled it routing boost reference lines.
MM98 is offline  
Reply With Quote
Old 04-18-2018, 03:42 AM
  #8  
9 Second Club
 
Join Date: Nov 2003
Location: Norn Iron
Posts: 11,274
Default

It doesnt need to add pressure. The spring is there, unless it was an incredibly poor setup with huge EGBP then the spring is doing the job it is designed to do. It would require a lot of force in the exhaust manifold to blow open the gates valve against spring pressure alone, often far far more than 10psi.

You would only need to add pressure to assist the spring if your setup needed that.

Same applies with any form of control, manual or electronic, doesnt matter.
stevieturbo is online now  
Reply With Quote
Reply

Thread Tools
Search this Thread
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: