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  1. Mods for 06 and up ls4

    Automotive Discussion
    Recently I got a 06 impala ss used. When I got it it came pretty stock only thing done to the car was a walker quiet flo mufflers and a set of MSD ignition wires and K&N drop in filter. So over past couple weeks I been doing the normal bolts ons. I installed a cold air intake I got from amazon...
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