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Downpipe question

927 views 2 replies 3 participants last post by  Marty 
#1 ·
I have a 2004 F250 cc short bed, what is benefit of installing a new downpipe versus just doing cat back, looking at 4" turbo back and have heard that unless you have chip and intake you may actually loose low end torque by changing downpipes?
 
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