I am not a expert on this stuff...but what exactly would be the pros and cons of headers and high perf exhaust? I understand horse power and torque...but anything in mpg improvment? I like the quite ride I have now...but was talking to some folks and they seem to think I would improve mpg with headers and exhaust. And if there was....how much improvment do you all think verse the cost of headers and exhaust? Just food for thought......
2002 Expedition XLT (2wd with 4R100 auto) with 146k...traded on an 2008 Expedition XLT (2wd with 6R75 auto)Heavy tow-package, DVD,18"Chrome Clad wheels,Leather and ScanGauge II.
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