Flowmaster 3"to4" merge vs speed engineering y pipe
06-27-2016, 06:19 PM
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Staging Lane
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Flowmaster 3"to4" merge vs speed engineering y pipe I installed Speed Engineering 1 7/8 headers and having fitment issues with a 3 inch Y pipe with a flowmaster merge. Would there be a big flow difference going to a Speed Engineering Y pipe? Mods in sig
