Closed loop boost

Discuss which Sensors work best with these ECUs and share how you are using inputs and outputs
INDYabusa
Posts: 21
Joined: Thu Dec 14, 2017 4:40 pm
ECU Model: S100 Pro
Distributor: DTA UK
Firmware Version: 79
Location: France

Re: Closed loop boost

Post 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
Westfield Megabusa 1300 (Hayabusa powered Seven style kitcat and soon with DTA S100 ecu)
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Closed loop boost

Post 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.
Vitesse
Posts: 25
Joined: Wed Apr 22, 2015 9:26 am
ECU Model: S60 Pro

Re: Closed loop boost

Post by Vitesse »

Can someone confirm the pipework connections for the MAC valve fitted to an internal wastegate actuator, is this correct?

Image

Port 1 To atmosphere / filter
Port 2 To wastegate actuator
Port 3 Boost pressure from intake

"Edited now shows correct fitting"
Last edited by Vitesse on Sun Apr 21, 2019 3:35 am, edited 1 time in total.
INDYabusa
Posts: 21
Joined: Thu Dec 14, 2017 4:40 pm
ECU Model: S100 Pro
Distributor: DTA UK
Firmware Version: 79
Location: France

Re: Closed loop boost

Post 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/
Westfield Megabusa 1300 (Hayabusa powered Seven style kitcat and soon with DTA S100 ecu)
Vitesse
Posts: 25
Joined: Wed Apr 22, 2015 9:26 am
ECU Model: S60 Pro

Re: Closed loop boost

Post by Vitesse »

Very good article, thank you
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