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vroom vroom?
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thanks to everyone for your input and for the tech speak. I actually appreciate tech speak because most of my :BS (BS) is in Mechanical Engineering. It warms my heart to know that there are others who are not afraid of big words on an R6 somewhere.:toocool:
 

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All I can say is that you get what you pay for. Many of the better designed exhaust systems will be mandrel or pie cut (if titanium) and give the maximum radius.
 

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BOOF!!
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485 Posts
I also had to chime in on this (even tho its semi-OT), mainly because there are people who are on a quest for power and believe that gutting their catalytic converter will create increases.

Do yourself a favor and do not gut the cat. Doing this will cause a little cavity in your exhaust, which will cause the high pressure gasses to decrease pressure as they enter that hollowed out cavity and then have to increase pressure again as it leaves that cavity. This whole "action" slows down the exhaust flow and will HURT power.:fact

If you want to get rid of the cat, get a pipe that will replace the segment of pipe that the cat is in. Doing this still MAY cause power loss, but no where near as much as just gutting the cat because in both scenarios you are still changing the TUNED exhaust's characteristics. I won't get into this much, as I am not a master of thermodynamics...
 

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R-E-S-P-E-C-K-T-T
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2,872 Posts
This Thread Is From 2005!!!!
 

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Try this test at home. Take a hose pipe and turn on the tap a set amount - say one turn. Time it a few seconds with the pipe dead straight and see how much water ends up in a measuring jug. Then gently loop the pipe, even in a complete circle and do the same again. If you are accurate you will ene dup with exactly the same amount of water each time. Exhaust gas is just the same... 2-Even when bends do not affect pipe radius, they still CAN cause a performance issue, albeit a small one in this case. But since we're talking technical terms, they do affect the performance. With a completely straight pipe, the exhaust is being shot out and, in a perfect world, is not hitting anything at all. (Read:no restrictions) The fact of the matter is that when you have a bend in the pipe, it is hitting the wall at an oblique angle. When the exhaust hits that wall, it causes a restriction, and herego a detraction from overall performance.
 

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a tv show debunked this myth recently. they smashed the hell out of headers and the engine made more HP at one point but over all lost almost nothing. dyno's don't lie. micron used to have a set of headers that also proved this theory as a myth. just google micron serpent headers and you will see what I'm talking about.
 

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a tv show debunked this myth recently. they smashed the hell out of headers and the engine made more HP at one point but over all lost almost nothing. dyno's don't lie. micron used to have a set of headers that also proved this theory as a myth. just google micron serpent headers and you will see what I'm talking about.
https://www.youtube.com/watch?v=azPKIjxmmdU
Can't find it with google search.
Do you have a link?
 

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Knee drags YOU!
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Been a member for years but haven't had much to contribute.
Came from the R1 forum where I have thousands of posts.
 

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Yamaha Blue in any color
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3,250 Posts
Now I can see the video and pics.
Sorry for the post whoring. 0:)
There are a couple minor differences between the two. But more or less the same.
 
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