Depends on what other mods you have. You can have them programmed to suit your individual needs. Do you want one just because you heard they add HP or are you trying to make some adjustments to your current setup?
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1997 Cobra, C+L 80mm MAF, Pro 5.0 shifter, BBK Springs, Taylor Wires, 2 Chamber Flows, ASP Pulleys, MAC off road H pipe.
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