Powerpack vs. Borla XR-1
02-05-2009, 04:59 PM
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Powerpack vs. Borla XR-1 Guys I have ls1/t56 installed in my Sonoma. The truck has 1 1/2" shorties with 2.5" True duals with a X pipe and powerpack resonators. The truck sounds great at idle but it gets stupid loud around 2300 rpm. I am wanting something with a great idle sound but without the crazy drone around 2500rpm. Anyone have experience with swaping between the powerpacks and borlas XR1?
