C63 AMG (W204) 2008 - 2015

Agency Power Headers only power gain?

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Old 08-07-2014, 06:40 PM
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2011 bmw 335i, 2014 c63
Agency Power Headers only power gain?

Like the title says. I'm in the market for some headers and I was thinking agency power. I know other long tube headers do make a lot but I have the opportunity to get a sweat deal on some.

I know texasengineer posted his dyno at 411 i think but the weather was really hot.

wondering who else has them and how much of a power gain you got paired with a tune?

thinking eurocharged

Thanks

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