thecrash91
Member
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- 2003.5 Mazdaspeed Protege
friend just told me if i get headers and eliminate 1 of the cats (with the header) i will get a significant loss of power as well as MPG, he said i would lose at least 5 mpg, is he full of s*** or is he right? this would be in combination with the HKS hi power axleback exhaust