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Re: Closed loop boost
Posted: Wed Apr 10, 2019 2:24 pm
by INDYabusa
What is the recommended maximum pressure for a N75 valve ?
Is it worth the money to swap to Mac valves. In that case 3 or 4 ports.
I have a Forge internal wastegate with 2 ports.
Advice appreciated. Jérémy
Re: Closed loop boost
Posted: Thu Apr 11, 2019 2:21 am
by Alex DTA
There is no maximum pressure, it all depends on the air flow, back pressure, and many other factors.
If you don't have boost creep, you're fine.
If you do have boost creep, this could be a factor.
Re: Closed loop boost
Posted: Sat Apr 20, 2019 3:03 pm
by Vitesse
Can someone confirm the pipework connections for the MAC valve fitted to an internal wastegate actuator, is this correct?
Port 1 To atmosphere / filter
Port 2 To wastegate actuator
Port 3 Boost pressure from intake
"Edited now shows correct fitting"
Re: Closed loop boost
Posted: Sun Apr 21, 2019 3:03 am
by INDYabusa
Your MAC valve looks to be a fake to me. Plumbing looks also incorrect as you don’t feed air through the Common port
You will find all details on this page:
https://www.onpointdyno.com/boost-contr ... ave-money/
Re: Closed loop boost
Posted: Sun Apr 21, 2019 3:29 am
by Vitesse
Very good article, thank you