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Old 14-08-11, 16:51   #6
RB30DEVL
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Join Date: 30-08-02
Location: NSW, Newcastle
Car: VY SS Commodore
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re - best exhaust system

For a SOHC 3 litre VL, pacemaker extractors , going to a 2.5 inch hi flow cat , then onto a mandrel bent 2.5 inch straight through system such as a redback.

I used a 3 inch cat on the twin cam engine and the mentioned exhaust system without a resonator and that was plenty for even that engine.
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