Turbo boost control question
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Joined: Jun 2003
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From: Somewhere in the lower part of, MI, U.S.A
Turbo boost control question
I bought a IHI RHb5 turbo off of a Mazda 626 yesterday and i read somewhere that the stock integral wastgate is actuated at 8psi. Is their anyway i can lower the boost on this turbo? i was hoping for more like 5-6psi. thanks for your help
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Joined: May 2002
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From: Granada Hills, Ca, USA
Re: Turbo boost control question (Sideout)
I could be wrong, but I think you can either use a boost controller or just change out the wastegate actuator (the dashpot diaphram thing).
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Joined: Nov 2001
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From: broke in the bay area, CA
Re: Turbo boost control question (4drEF)
A boost controller won't lower it. What I did on my old set up was lengthen the actuator rod. It reduced the boost, but added major lag since the wastegate was open all of the time.
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