Thread: Jb4 shop nj?
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      01-04-2013, 03:01 PM   #5
Jake@PTF
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Drives: AW E92 335i
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Check out Helix. They know the n54/n55 inside and out. The JB4 doesn't require "tuning". Just install and go. If you want something for custom tuning for your car that will be dialed in for you specifically get an AP and protune/etune.
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