Can I run the MACE 12mm Plenum spacer and the 25 mm insulator with the stock throttle body ? Siya March 01, 2024 10:57 Yes, you can. Related articles I have a 2003 VY Commodore Ecotec V6 sedan. Would adding a manifold insulator increase the performance further? Comments 0 comments Please sign in to leave a comment.
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