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the old smarty files smoked alot the newer ones do not, h&s have always smoked alot, but thats on the higher settings and you can keep them from smoking if you know how to drive, I would say get the blackmaxx because they have so many more options then the smarty, water/meth,nitrous, tcm tuning, built in guages, adjust on the fly(smarty can with it plugged in kinda of a pain if you ask me) and there customer service is much much better then almost any company out there.
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All Out Diesel (08-31-2010)
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