headers
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Joined: Nov 2008
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headers
wassup honda dudes! i took your advice for the exhaust now i am ready to buy headers and was wondering where and what kind i should buy. i like strong coating inside and out NO RUSTING please. i got the 4 cyl. vtec ulev
Senior Member
Joined: Jun 2008
Posts: 528
From: Cedar Grove, NJ
I can guarantee 100% that below 4000 rpms the 4 cylinder accord is slower with a header. The reason is that the systems are sized around 6500 rpm. At low engine speed the airflow isn't uniform and will not move through the exhaust piping as efficiently. The header will give you less of a restriction at the upper range and therefore will dyno a gain at peak HP, but this is simply because the curves have been shifted up in rpms.
HP = torque * rpm / 5252
HP = torque * rpm / 5252
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