Boost Control: Open Loop vs Closed Loop

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Joined: Tue Dec 22, 2015 3:35 pm

Boost Control: Open Loop vs Closed Loop

Postby houmack » Fri Oct 14, 2016 10:50 am

I need a validation please.

I'm trying to understand the point of Cloosed Loop BC other than just being able control boost by gear.

I have a haltech electronics mac valve boost controller connected to my PS2000.

I just run open loop and on the map, I put the duty cycle at 100% until I want to target a boost level, then I reduce to a lesser value. So most of my map under 5000rpm (when full boost is achieved) is set to 100% to keep my 17psi spring wastegate closed, then I have 60% to achieve 24psi for example.

And my boost is very steady and works fine. Is it more advantageous to change to closed loop?

Setup is a built 2jz with a 75mm T6 turbo, E8.


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Re: Boost Control: Open Loop vs Closed Loop

Postby HaltechMatthew » Fri Oct 21, 2016 4:58 pm

Closed loop will keep it consistent with changes in air density.

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