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Posted by Ubipa (more from Ubipa) on Thu, 1 Nov 2001 08:00:10
In Reply to: Re: Header, Justin VanAbrahams
[Profile/Gallery]
, Thu, 1 Nov 2001 00:52:45
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I never got a chance to measure the pipes precisely so I can't tell you much of the dimensions or the power range. Headers are specifically designed to work in a certain rpm range. If you change the ID of the tailpipe of the header you would have to change the collector length to compensate, or something like that. I'm not sure if they would be willing to change their design that drastically.
A 2.5" exhaust for a 2.0L 8v or even a 16v is a little big. I think you're losing power where you want it (if it's a street car). Using a cat also will make it less noticeable since the ID of the cat doesn't usually match up. You probably wouldn't notice a difference using the 2". It wouldn't be worth the extra dollar to get it to a 2.5". How I see it, the header and cat-back almost work as separate devices. When used together, the header is more for tuning the low middle while the cat-back is for the high rpms.
When I take mine off, I'll have to measure it to see where the power range falls and what would have to be done to it to fit a 2.5" tail. Seriosly, you'd be fine w/ the 2" 4bolt flange version.
posted by 4.40....
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