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I myself would answer that question like this, yes there are advantages to the aftermarket box IF you have a power commander and can find a chassis tuner like the one I just found in my back yard (long story) anywho I was pretty fast but wanted more and my guy said "more is possible with tuning" only trouble is you need a power commander or bazazz box OR a way to flash program your ECU. Its a slippery slope I tell ya, do what makes you happy, happy, happy...
I spent $630.00 for a PC and tune and gained around 5 ft pds at 7800RPM, that broadened my torque curve and made my car accelerate like a scalded dog off the corners and I love it. There is more on the table too, I can add a piggyback ignition box and make gains from that too. Did I mention this is like a slippery slope...
Good luck to ya, Tom
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