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Re: NBS Big 3 upgrade
mine used to go as low as 11.5 hitting, now maybe 12.8. I also added about 1.5 miles to each gallon on the highway
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04 EC Silverado 4.8L,Pioneer, Rockford Fosgate, K&N, Viper, ACT, USSpeedo, Matrix, Whelen, Blackbear, 22" Eagles, Nittos,Russel,Magnaflow
94 4 Door Blazer, Pioneer, Rockford Fosgate, Suicidedoors, Eagle, Nitto, PCM4Less, Vortech, Hedman, K&N, Granetelli, Bondo(lots), way deep under construction
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