anyone use one of these???

they look good, but a little pricey

http://www.aero-turbine.com/

 

bump

 

I don't think it will work that well. I can't figure out any technical detail of the stuff other than those marketing gimmick. It is either a straight pipe with turbine fins from the wall (kind of like those tornado intake that doesn't work) or you have a mini turbine inside (increase back pressure).

Eitherway you will not make it any more efficient than straight through muffler with steel wool tuned correctly. Exhaust is a wave and you cannot quiet it down without some buffering device (chamber of some sort, like steel wool insulation or the chamber of regular muffler), or tune the pipe to loop it around, and have it cancel out itself (twin loop muffler).

I will believe it when I see their HP/Torque/Noise dyno vs. stock/other brand muffler.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PandaBear &raquo;</TD></TR><TR><TD CLASS="quote">
Eitherway you will not make it any more efficient than straight through muffler with steel wool tuned correctly. Exhaust is a wave and you cannot quiet it down without some buffering device (chamber of some sort, like steel wool insulation or the chamber of regular muffler), or tune the pipe to loop it around, and have it cancel out itself (twin loop muffler).
.</TD></TR></TABLE>

destructive wave interferance

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rkrone &raquo;</TD></TR><TR><TD CLASS="quote">destructive wave interferance</TD></TR></TABLE>

But it doesn't look like destructive wave interference. It won't reflect sound waves back. Its looks like they're just trying to create something like a venturi in the muffler, and using the vacuum that would create to affect the sound. Maybe my understanding of this concept is lacking.

 

I want to see pics, not movies..
in turn, I hate their site, and the muffler probably sucks,
Mostly because they have poor web design.

 

are there any similar mufflers like these?

 

this kinda reminds me of the same scheme that the lil tornado thing inside the intake pipe was doing.don't think its worth it, but never know. i'd like to see some dyno comparisons on honda motors