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Old 07-19-2017, 03:27 PM
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bcredliner bcredliner is offline
.1 decrease 0-60 time = $1000 & DIY
Join Date: Jun 2008
Location: Little Elm,Texas. (40 minutes North of Dallas)
Posts: 7,069
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I haven't found headers that pass the test of HP/TQ per dollar spent for a 4.6.

I opted for electric cutouts a few years ago. Might consider headers if I was racing on the weekends or when I can't think of anything else that is a value added mod---just maybe.

As a point of reference, the Dinan low restriction exhaust improvements were 8HP and 7TQ . The exhaust alone was too expense for gains but it was necessary to get most out of the other Dinan engine mods. And, Dinan was pretty much all there was for a 4.6.
X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
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