Alternative x-pipe position
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Alternative x-pipe position
Please excuse me for posting to another forum but I can't work out how to post multiple pictures here.
You may remember my quad exhaust post. I wonder if any of you would like to comment on an alternative idea I have here.
Mike<ul><li><a href="http://www.tyresmoke.net/forum/audi-a8-s8/112217-exhausts-decisions-decisions.html">here</a></li></ul>
You may remember my quad exhaust post. I wonder if any of you would like to comment on an alternative idea I have here.
Mike<ul><li><a href="http://www.tyresmoke.net/forum/audi-a8-s8/112217-exhausts-decisions-decisions.html">here</a></li></ul>
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If you can, try to avoid relocating the crossover.
Moving the X-pipe would be like changing the length of a collector (or length of a secondary) in a performance exhaust system. Google "exhaust tuning" for more information than you'd want, but in general ...
1. Moving the X-pipe forward would raise engine torque at higher RPM's.
2. Moving the X-pipe rearward would raise engine torque at lower RPM's.
I've modeled the S8 motor and exhaust with Performance Trends' <a href="http://www.performancetrends.com/Engine_Analyzer_Pro_v3.3.htm">Engine Analyzer Pro</a>; but unfortunately, it's installed on an older computer, and I haven't yet migrated it to the computer I'm using now. :-(
1. Moving the X-pipe forward would raise engine torque at higher RPM's.
2. Moving the X-pipe rearward would raise engine torque at lower RPM's.
I've modeled the S8 motor and exhaust with Performance Trends' <a href="http://www.performancetrends.com/Engine_Analyzer_Pro_v3.3.htm">Engine Analyzer Pro</a>; but unfortunately, it's installed on an older computer, and I haven't yet migrated it to the computer I'm using now. :-(
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Audiworld Junior Member
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Re: If you can, try to avoid relocating the crossover.
It was this article here that got me thinking. 50" secondarys!
Mike<ul><li><a href="http://www.popularhotrodding.com/enginemasters/articles/hardcore/0505em_exh/index.html">Exhaust Science Demystified</a></li></ul>
Mike<ul><li><a href="http://www.popularhotrodding.com/enginemasters/articles/hardcore/0505em_exh/index.html">Exhaust Science Demystified</a></li></ul>
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