Dynomax ultraflow Q
http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
First one say internals are *Glass-wrap perforated tube
Second one says internals are *turbo style
Which design is quieter? Anyone know, or doesnt it matter? Also why are there ultraflow ss and welded any difference there?





