TwinTurbo.NET: Nissan 300ZX forum - I have and others have made posts comparing the two..
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Subject I have and others have made posts comparing the two..
     
Posted by KongZTT GT28RS MD on March 31, 2010 at 11:06 AM
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In Reply To If I only want to boost to 18 or 19 psi... posted by ZXoltan on March 31, 2010 at 09:49 AM
     
Message They are more responsive in "sharply" holding boost and when building up to "set boost pressures".

Because the forge actuators have linear rate springs that have goals in different spring options.

Basically the HKS springs get stiffer as they get compressed vs. the Forge which are stiff throughout,

The wastegate flapper would be held shut untill the desired (spring choice and fine tuning of actuator rod for Forge) boost pressures are reached. Meaning the boost will get to peak boost pressures more efficiently and sharply.

The HKS actuators, since progressive springs and compression of actuator rod methods are utilized to obtain desired boost pressure, it can can the wastegate flapper to "open" partially, BEFORE reaching desired boost, then snap back shut to finally get to boost set.

In short, Get the Forge. Set them equally between both turbos (At the SAME TIME using a mityvac etc and 'T' fitting). Set pressure a few psi below actual desired boost pressure due to exhaust pressures pushing against flapper, heat etc.

NO, This picture is not photoshopped. It took many times to take this picture. Setting up the timer, shutter speed etc, then jumping on my bike and getting the tire to spin.



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-1991 Stage _ TT 5spd (Upgraded to hell and back)
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