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| 2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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#1
Wed, August 10th, 2011, 06:50 PM
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Exhaust question
I just want to be clear on this. If I order custom tunes with my current exhaust setup (straight pipe from stock Y back) and then install a true duel setup with crossover later, will I need new tunes made? I will be keeping the stock cats on.
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