Anyone have it , If so do you have pics.

 

 

I was thinking more along the lines duals similar those on the FC

 

It doesn't really work on the FD because of the fuel tank. There are a few true dual exhaust FD's out there. However, to do it, those FD's removed the stock fuel tank and used fuel cells.

 

wow pink monster truck fd!

 

that is a crazy exhaust. probably loud as hell too.

 

Well as she sits right now as a stripped down rolling chassis. So now is the time for me to be asking these questions. Wouldn't the fuel cell add noise to the interior, and have to be welded into the chassis? Guess I'll need pics of that too. 20B streetcar for those who want to know. Just going for something radically different.

 

have you seen what that thing transforms into?!?

 

LMAO!! Where did you find that pic? LOL!

 

errrrr....i dont wanna talk about it.

 

dude that's some funny ****

 

http://tineye.com/search/1da0ff2de4c...3074531c2a8fa7

:-) neil

 

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it's sparkle gundam

 

Dual exhaust isn't good for anything except show. It's just extra weight, and extra space being taken up.

 

I totally agree!

 

Not trying to be a dick but, different isn't always better.

 

Good point. That's why I figured I would ask.

 

"Dual exhaust isn't good for anything except show. It's just extra weight, and extra space being taken up."

I don't agree. Two 2 1/2" pipes will flow more than one 3" pipe. Two pipes would allow two cats and two mufflers, reducing emissions, noise and back pressure.

 

Mike, I think you have proven my point on the weight and space issue. Regarding you're back pressure point, more back pressure is created by the muffler and cats than the diameter of the pipes. If pipe diameter was that big an issue, a single 4" pipe could be used.

 

Too large a diameter causes the flow to slow down which creates extra backpressure, there is an ideal exhaust diameter. Also, the T section that splits the exhaust needs to be propperly engineered or it will also create a lot of backpressure.
I'm not saying that it can't be done but I don't see any specific advantage to be gained.
Otherwise it's just a matter of opinion, personaly I think dual exhausts belong on cars with a lengthwise mounted V engine. Think musclecars and VQ powered Nissans.

 

"Regarding you're back pressure point, more back pressure is created by the muffler and cats than the diameter of the pipes. If pipe diameter was that big an issue, a single 4" pipe could be used. "

All true, but if you split the exhaust in two, each cat and muffler must handle half as much exhaust as a single pipe. I believe I've read posts here from guys who have 4" exhaust experience even more noise. I'd like my car to be quiet...think Porsche...but it seems that can't be done without sacrificing too much HP.

 

Another point: Don't you think Porsche, Corvette, etc. would like to reduce weight and gain space? They could route their exhaust to a single pipe if they thought it better. Well, maybe not Porsche, but any front engined car.

 

Part of that can be explained by the fact that performance isn't the only factor in a design, esthetics are also important.
Case in point: the Honda S2000, inline 4cylinder, but it has a dual exhaust because it just looks sportier and more symetrical. But most aftermarket exhausts for that car are single.

 

I'll throw this out. I have a single turbo FC and my friend whom I share a garage with has an FD with stock twins. Both are running straight pipes (no resonator or cat) back to a 3" Racing Beat catback (FD has dual tip). I know they're not the same setups, but my FC is noticeably quieter than the FD at idle and lower speeds. Up top it's hard to compare because I have an external wastegate rerouted into the downpipe (which changes the exhaust note) versus the stock twin setup on the FD.

I think the dual exhaust allows more noise suppression at a given level of flow, but you add additional weight. I ran the RB duals on my FC because the FC has dual exhaust from the factory and I think they don't look right with a single exhaust. It's still a 400+rwhp car so I'm not sweating the weight. I really like the look of the RB dual tip on the FD's though.

 

The only advantage is noise suppression and looks. Ignoring those 2 things, the amount of weight you add is not worth the gain unless a 4" exhaust isn't big enough for you? And even then if you can fit anything bigger then 4" under there, you could do the same at the muffler so I really don't see a point except for the 2 mentioned reasons. And if your setup is already radical enough to need that big of an exhaust, its probably some track/drag car, so why not just dump it out the side fender/door saving yourself that entire path and weight.

The exhaust theory where velocity will slow down does not matter on a turbo car. The bigger your pipe after the turbo the better in ALL power related cases.

thewird