Quote:
Originally Posted by rex2sx
No you dont get it. Who said anything about temp?? Exhuast deals with flow/velocity. Flow is the speed of air. You flow FASTER with a small straw. With a big straw you can flow MORE air but at a SLOWER rate.
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belive me, i'm the one who gets it. and when you take your first physics class, you will too. and temp is at the heart of the exhaust system. air temp, velocity, density, flow all are directly related. if you change one of them, they all change. the only way for a larger pipe to flow more air is if the source of the flow is also larger.
Quote:
Originally Posted by rex2sx
No its not backprssure. Please tell me houw a free(er)-flowing exhuast causes back pressure. Thats like saying an air pump pushing air into the atomsphere has backpressure, no it doesnt. You cant measure pressure of the air flowing out.
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your air pump doesn't have to channel more air behind the constantly changing air it already put out in a contained path. once you contain the air flow (as in an exhaust) you can measure the pressure of the air flowing out.
Quote:
Originally Posted by rex2sx
You tune the exhuast as a WHOLE. So if you have restrive mid pipe,bends/dia. then it will effect how the exhuast gases are pulled out.
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yes and as a whole, i assume you mean from the ex ports back.