I have been searching the net and cant find anything about electronic exhaust systems for the RX7. I know the knowledge is out there because they make them for trucks. Does anybody know where I might be able to find anything about this for cars? Does anybody know what it might take to do this anyway? I am curious and wondering what the upside and downside to this type of mod would be.

 

What is it that you want it to accomplish ??

 

he wants to eliminate his muffler bearing and switch over to the new style obdXXII electric thrust exhaust.
it makes for that woooo wOOOO

 

That's a big *** bass!


-Ted

 

No I do not want a Woo woo exhaust sound. I want no sound at all. Or I want to eliminate as much of the exhaust sound as posible without hurting performance. They use these in big diesel trucks and Iwas wondering if anyone has made these for cars yet. What they are doing is creating an oposing sound to what your exhaust is canceling the exhaust sound. If I wanted a woo woo sound I would put guitar strings on the end of my exhaust. I dont want people to know I have a built up car so that jack asses will stop trying to race me on the street. Yes it is a big *** bass.

 

I'd love to have that, and just turn it on when cops come around or I'm listening to music, turn it off when I want to hear it :-P. If you figure it out that would be interesting.

 

There is no such thing as electronic exhaust systems for big diesel trucks.
They have exhaust brakes but it has nothing to do with "sound". It pretty much closes off your exhaust leaving no where for the air to go but back into the engine. The pistons compress this air and is then used to slow down the truck...

 

the exhaust braking on big rigs is called a Jake Brake. if u want a quiet exhaust, get the rb setup.

 

I had heard that Ford was playing around with this technology but I didn't know of any applications. Yes the technology exists, Bose has noise canceling headsets that we use flying. As for exhaust app's, don't know, maybe that was the April issue of some car mag that I read it in... and we are a couple of fools

 

About 10 or 15 years ago Lotus Engineering built a prototype noise canceling system.
It worked like today’s noise canceling headphones, only for the whole cabin.
They made it so quiet in the car that driving was boring, so they added back some selectable engine sounds to put the fun back in driving.

I think the switch settings were Silence, Ferrari, Porsche, American V8, & off for Lotus Cosworth.

 

lol, I want that system you just mentioned sureshot, it prolly would cost a fortune in a half though.

The only system I know of that even puts electronics into the exhaust for sound deadening is a electric controlled muffler, sorta. It hooks up either right before or right after the muffler and makes the opening bigger and smaller which greatly reduces exhaust noise, but reduces power as well. I saw it in a recent Jeg's catalog, it was like a hundred bucks or something.

 

Yes Sure Shot I would like something like this exept I dont care if I can here my car. I perfer to here it. I dont want it to be that audible though. I also could care less for the different settings. I know that noise canceling techknowledgy works but does any body offer it for the automobile. If not then does any body know of an audio manufacturer that makes speakers that can hold up to the abuse that they would have to withstand. I am realy drunk rite now I thought that I would throw that out to everyone listening.

 

http://cgi.ebay.com/ebaymotors/Apexi...spagenameZWD1V ??

 

This reminds me of a vid I saw at a friends house that he downloaded from ebaumsworld. It was this shop that welded in a piece of metal in the tailpipe that made the exhaust WHISTLE!!! They called 'em "whistle tips"!! A news crew interviewed the guy. It was prolly the funniest vid I've ever seen!!! During the vid, the camera guy caught an old Ford stationwagon on camera flying through an intersection with one of these!! The whistling was soooo ridiculuously loud and obnoxious, it was hilarious!!

 

Actually many years ago I tried to build a noise cancelling muffler by combining both rotors pipes into a single and then split the pusles and effectively make the lenght longer on one path compaired to the other inside the muffler causing them to be 180 out of phase. It didn't work because the difference in lenght needs to change with RPM.
Michael Smith