Thread: No boost?
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Tippy Tippy is offline
Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,007
Originally Posted by Raceboy View Post
Actually it will because the wastegate will not begin to open so soon (with single port control, wastegates tend to begin to open at ~1/3 of the target pressure).
The stiffer the spring, the sooner it will wake up. This is the whole idea behind dual-chamber control, just with latter the wastegate spring stiffness is literally reduced when boost target has been reached.
He meant the factory Holset WG flapper, not the external.
Cory - '87 C3.2 (3.4, stock 3.2 heads, cams, intake, with 75mm Mustang TB) Guards/Blk - turbos new to old 1). Borg Warner S366 (66mm comp/73mm turb/0.91 T4 divided ~1.4 bar), 2). Holset HX40 8-blade (58mm/"P" trim 0.84 T4 divided 1.4 bar), 1/4 mile 12.02 @ 129 MPH (street tires), 3). Turbonetics 60-1 HiFi (60mm/"P" trim 0.81 A/R T4 open 1.2 bar), 431whp - MegaSquirt II/EDIS ignition/80lb inj
Old 12-04-2013, 12:56 PM
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