dennis smith
New member
This is a stock hemi predator with filter adapter and header non tech items (also has a blueprinted SP carb). The only pipes I have are multi stage 9.30 clone headers. My questions are, is a smaller pipe needed? If so, which one? Would not using a standard RLV 1- 5/16” muffler be any advantage? The tracks are 1/8 mile and smaller with tight corners.