boost controller function
Thread Starter
Joined: Sep 2007
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From: woodbine, md
boost controller function since I am new to the turbo world, I have to ask-what does a boost controller do-I am guessing it cuts back on the boost a wastegate sees, tricking it into letting boost rise?
I thought on a waste gate you used springs that open at a set pressure/boost
thanks
I thought on a waste gate you used springs that open at a set pressure/boost
thanks
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iTrader: (10)
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From: Joliet,IL and Las Vegas 50/50
The wastegate has a set pressure based on the spring you use. A boost controller basically pushes against that pressure from the top port using a controller. So if you have a 10lb spring in your wastegate you can use the boost controller solenoid to apply additional pressure to the top keeping it closed and allowing more exhaust to build additional boost instead of bleeding it off with spring pressure alone
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Joined: Nov 2003
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From: Norn Iron
But normally it's boost pressure pushing against the spring ( plus EGBP ) that forces the w/g open to control boost.
So if you start to bleed air off that signal line, there will be less pressure against the spring, gate will remain closed and engine will make more boost.
Staging Lane
Joined: Jan 2006
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Another bonus is that they can help build boost a little quicker. lets say you have a 10# spring. the gate will start to open before the rated boost, but with a controller you can keep it closed completely until the boost level you have it set at. On my greddy controller it is called "start boost". If set too high it can cause a little spike though. It's not a whole lot of difference, just a little quicker getting to peak boost.
