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Old 02-02-2010, 04:17 PM   #38
scrming
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Drives: 12 Second Brick
Join Date: Jun 2009
Location: at my pulpit
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The 4.0 Mustang motor is probably more similar than you think... their dyno graphs are about identical until about 4,000 RPM where I believe you start seeing the VVT really shining on the LLT... at that point the LLT graph takes off...

Also.. you mentioned the perforated x-pipe... found the diagram for that:



I have the feeling that this x-pipe is really absorbing a lot of sound along with the two mufflers... giving the system it's refined but quieter sound...
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