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Contour and Focus
SVT Contour
Proven Contour SVT Mods
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<blockquote data-quote="Rara" data-source="post: 25020" data-attributes="member: 695"><p>I think you are looking at it the wrong way, the stock exhaust on the Contour SVT is the biggest bottleneck in the system (y-pipe is included here) and a good cat-back and y-pipe will improve both hp and torque across the band. however it is possible to go too large on the exhaust, and kill the exhaust gas velocity at low rpm, which means less torque at low rpm. I think my 2.5" piping is on the large side of ok, I would definately not go larger, especially on a near stock car (most are).</p></blockquote><p></p>
[QUOTE="Rara, post: 25020, member: 695"] I think you are looking at it the wrong way, the stock exhaust on the Contour SVT is the biggest bottleneck in the system (y-pipe is included here) and a good cat-back and y-pipe will improve both hp and torque across the band. however it is possible to go too large on the exhaust, and kill the exhaust gas velocity at low rpm, which means less torque at low rpm. I think my 2.5" piping is on the large side of ok, I would definately not go larger, especially on a near stock car (most are). [/QUOTE]
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