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Message: <blockquote data-quote="GEFORCEXTREME" data-source="post: 1063824927" data-attributes="member: 83979">Nice post, but the way I see it, is right from the engine. When the exhaust system is restrictive, the force produced from combustion is used to push harder your pistons, so you get more torque. In a less restrictive exhaust system, there is more "leak". Instead of pushing your pistons harder, some of the force is "leaked" through the exhaust system.---------- Post added at 06:35 PM ---------- 6 hour anti-bump limit - Previous post was at 06:33 PM ----------I don't think it is something to do with how fast the exhaust gas flows out, rather how much pressure or how restrictive it is. That's why ppl say you need some back pressure for low end, otherwise on the high end.---------- Post added at 06:40 PM ---------- 6 hour anti-bump limit - Previous post was at 06:35 PM ----------Just take the blowing balloon as an example. When a balloon is good, you blow it, and it becomes bigger, but when there is a hole there, you blow hard, but the balloon grows bigger at a lower rate.In this case, the exhaust system, how restrictive is it is just like how big the hole is.---------- Post added at 06:43 PM ---------- 6 hour anti-bump limit - Previous post was at 06:40 PM ----------So "I think" besides the exhaust setup, the valve timing should be also part of the equation, for eg when you use high cams and such.</blockquote>

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