What's the power difference between the 25mm and the 12mm manifold insulators? Siya March 01, 2024 08:33 There is about 3-4% difference in down low torque. Related articles Will the manifold insulators reduce top end power? Do you have manifold insulators to suit the 5.4L Ford 3-valve engine? What is the best combination of manifold insulator and plenum spacer for the SIDI LLT 3.6L engine? Is it recommended to use a 12mm manifold insulator with a 25mm plenum spacer in an Ecotec 3.8L engine for boosted applications? Is their big difference between your 12mm and 25 mm manifold spacers alloytec ve Comments 0 comments Please sign in to leave a comment.
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