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How much power gains from port and polished head and intake manifold?

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Old 02-18-2004, 11:29 AM
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Default How much power gains from port and polished head and intake manifold?

Would you recommend getting a RS4 Intake Manifold instead of a port and polish job on the stock intake mani.? I know Roughedgez has done it with great feedback on it. TIA
Old 02-18-2004, 11:35 AM
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using the "sand" method?
Old 02-18-2004, 11:36 AM
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What is the "sand" method if you dont mind me askin?
Old 02-18-2004, 11:37 AM
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Default It's mostly top end from the laminar flow increases.

If you're getting it done, might want to send it to Extrude Hone, they do a great job IME
Old 02-18-2004, 11:39 AM
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Default .

<ul><li><a href="https://forums.audiworld.com/a4/msgs/1567770.phtml">Don't try this at home.</a></li></ul>
Old 02-18-2004, 11:44 AM
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Default -----clicky prepair to laugh

<ul><li><a href="https://forums.audiworld.com/a4/msgs/1567770.phtml">https://forums.audiworld.com/a4/msgs/1567770.phtml</a</li></ul>
Old 02-18-2004, 11:45 AM
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Still teh best thread evAr!
Old 02-18-2004, 11:52 AM
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LMAO!
Old 02-18-2004, 01:13 PM
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You need to do everything, not just the heads (TB, instake cams, manifold, piping, etc.).
Old 02-18-2004, 03:11 PM
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Default All depends on where in the powerband you want your power.....

RS4 intake plumbing will give more high end hp, but will actually give you less low-end torque due to the fact that from a standstill, a larger volume of air must "fill" into the intake plumbing before an equilibrium is reached. For U.S. driving, not worth the verylarge amounts of $$$$ required. It's basically a mod for mod's sake unless you are doing some serious track time.


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