Join Date: Jan 2011
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I didn't really notice any difference for sound, BUT:
It makes the rails have even pressure, allowing the ICP to read both rails, and allows for better oil flow/pressure to the #8 cylinder.... helping it NOT run lean. (Not burn up the cylinder or the injector.) I think mine was $60 ish, I got the braided stainless steel line made by Tymar Performance.
I know CT Performance/Carey has them.