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Wastegate Actuator?

Cyprus

By Cyprus,
in Engines & Forced Induction

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Cyprus Enthusiast

Cyprus

Posted
Posted

"There are 3 ways of boost control. One with the standard wastegate actuator; You can get stronger ones which allow you to run higher boost all the time. Great if you dont fiddel and know what boost you want."

i read this in someones R33 tuners guide...

umm.. .. i still don't understand.. can someone help me understand how upgrading a wastegate will keep a constant boost level setting without a controller?

i know what a wastegate is and what it does but i just don't understand how i can preset a boost level by buying a certain type..

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https://www.sau.com.au/forums/topic/129214-wastegate-actuator/
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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

key word you missed there dude "actuator"

Not the wastegate iteself :no:

Thats the little "round" shaped thing attached to the front of the turbo via a brakcet generally.

Upgrading to a tighter actuator means rather than letting the wastegate open @ 7psi... if you have a 10psi actuator, it will open up @ 10psi of pressure.

Cyprus Enthusiast

Cyprus

Posted
  • Author
Posted (edited)

so if i get a 38mm aftermarket wastegate with a 10psi spring i will have my car running at 10psi boost ?

and would i be using an inner or outer 10psi spring.. because i have NO CLUE on which one im going to be using

annd is it a direct bolt on to my aftermarket dump pipe and stock r33 turbo?

Edited by Cyprus
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Yes. your car should run 10psi.

But for a stock R33 turbo. An external wastegate does not bolt on

Further more, its a waste of money.

What you are after is a 10psi actuator from an R32 turbo. Not a whole aftermarket wastegate setup.

Make sense?

benl1981 Grand Master

benl1981

Posted
Posted (edited)

The boost shouldn't rise more than 1psi after those mods. The actuator is sensing the pressure after the intercooler. All the cars I have seen the boost stays pretty much the same before and after those mods. Exhaust certainly doesnt change it. I saw 0.5psi increase after intercooler.

If you only want 10psi don't spend over $30...

Edited by benl1981

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