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3,233 Posts
Exhaust only, you need to leave intakes and chambers alone (tumble).
 

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I would need some sort of hard evidence to back that up.
Either from a flow bench or dyno.
Better yet, from track testing.
Too many people ruin perfectly good flowing heads thinking they know more than the people that spent months designing them.
 

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I agree. You pay a lot of money for "CNC". Don't screw with them.
 

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wouldn't touch mine, they came through with no imperfections and make plenty of power.
 

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377 Posts
There's no power to removing the lines...only changing cross section in the port.
Unless your looking for more power, or need a larger port for a large engine, or high rpm, they can be left as is.
Brian
 
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