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Last edited by ford_ba17 on Mon Jan 30, 2017 8:12 pm, edited 1 time in total.

I have pacemaker extractors (4490) hi flow cat and 2.5 xforce system. It first sounded a bit quiet with both xforce mufflers, so I had the centre muffler replaced with a resonator. I prefer it, sounds deep on idle and good up to about 2000rpm then gets that thinner sound the higher you go in the rev range, I don't believe that is the xforce system though. It is the way these engines sound up higher in the rev range. For a 6cyl, pleased.

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