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Header Tuning: Long tube headers work best when your Mustang is tuned. We recommend taking advantage of Stage 3's custom tuning package that comes with SCT's X-Calibrator 3 handheld tuner and qualifies you for our Loyalty Tunes program.
Stage 3 Tuning: Stage 3 Motorsports features the easiest way to get custom tuning for your Mustang performance parts. Fill out our simple tune sheet and submit it online after you've placed your order. If you need help, check out our tuning "How To" page or contact us directly.
