switchable electronic exhaust silencer?

[supramad77]

Some time back someone on here was trying to sell a bit of kit that fitted on a standard 3" exhaust that was wired to a switch so you could have a stock sounding exhaust when you were in town say and then at the flick of a switch it was back to normal. Can't seem to find the link to it as i am very interested in this idea. My car is very loud and drives me mad sometimes.

Links would be cool
Thanks for any help guys.
pat

 

[C.44]

http://www.xforce.com.au/cars/view_car/29

 

[supramad77]

Thanks for the link, not what i had in mind but looks interesting still. The thing i saw was about 8"s long and was welded into a normal 3" pipes.

 

[WhtMa71]

Put a 2.5" exhaust on with some nice big mufflers and the have a 3" e-cutout?

 

[kmfdmk]

How about this from Driftmotion.com

3" inch Electronically Operated Exhaust Cutout

 

[grimreaper]

be advised, it WILL leak at some point. Ive had several on my truck over the years. ALL have leaked. Best one imho is made by corsa, y pipe and switch are integrated, $$$.

 

[EdT.Mk3]

Crud, I wish I'd known after this before I completed my exhaust system. I didn't even notice that DM had a cutout available, I'll have to keep that in mind.

 

[GrimJack]

It's a very recently added toy.

 

[supramad77]

Thanks guys that was the one i saw. I would like to know how it works but it looks a good idea and saves buying a new quieter exhaust.

 

[super.secret.supra.club]

yey! new part for my list.

ed.d.

 

[Angry7M]

Thanks guys that was the one i saw. I would like to know how it works but it looks a good idea and saves buying a new quieter exhaust.

No, the electric cut out will only make your exhaust louder, its like running an opendowpipe.

To make your current exhaust quieter you would would need to change out the current muffler on your current exhaust setup. Then you would need to buy this electric cut out, and when ever you want it to be loud, just flip the switch.

 

[mk3ukr]

How about this from Driftmotion.com

3" inch Electronically Operated Exhaust Cutout

I didn't see this product before. Very nice.
1 month ago I fabricated similar device, only cable driven for my 4" exhaust. Similar to intake manifold TB, held by spring in normally open position. I didn't know what should be the diameter of throttle plate and desided to make it 90mm. After testing we found zero noise reduction, only on higher rpm/load noise was slightly less.
Now have to change throttle plate, should I make it 98mm to have 1mm gap? I see on Driftmotion unit gap is very small.

 

[C.44]

The "throttleplate" should have NO gap whatsoever in closed position... otherwise it will still leak and will make more noise even in the closed position.

 

[mk3ukr]

Got it, thanks.
I wonder how will it run with such high backpressure:icon_conf