99 Accord intake
Been Around A Long Time Member
Joined: Aug 2007
Posts: 6,213
From: Wayne, NJ
RE: 99 Accord intake
Of course!!! I'm not going to put a timeframe on it because I have too many started projects right now, but I have the materials from the armrest sub box that I was going to build for the accord just before the tranny died.
Joined: Dec 2006
Posts: 129
From:
RE: 99 Accord intake
ORIGINAL: falkore24
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
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
Although the header gives you less of a restriction (As with any exhaust modification) I doubt it's large enough to reduce torque.
Also, at low engine speeds, I doubt you will notice the loss in power (if any).
Well with a manual tranny anyway
up top though (4000RPM's+) you should notice a difference.
Thread
Thread Starter
Forum
Replies
Last Post
Booba860
Headers, Intake, & Exhaust
12
Feb 1, 2010 08:54 AM
94coupeaccord
Engine & Internal
13
Apr 11, 2007 11:00 PM
