Is the S4 & S5 ACV Different? Also is the TII & NA ACV Different?
08-26-02, 07:52 PM
#1
What R U thinking self?
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Is the S4 & S5 ACV Different? Also is the TII & NA ACV Different?
I'm trying to figure out more Fugged up gasket isues 
Any help appreciated. Thx.
I can post pics of my problem if you need me too.
Any help appreciated. Thx.
I can post pics of my problem if you need me too.
08-26-02, 08:13 PM
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The turbo and the N/A are different on a 87-88 for sure. I know not about the later years. The n/a uses vacuum to operater the relief diaphram while the turbo uses pressure from the airpump routed thru the relief solenoid back to the acv to operate the relief diaphram in the acv. Thats what little I know about it.
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