Found these on www.Skodaturkey.com

Bgds Dan

Looks a nice setup that does!

Hmm i like the look of that

that looks well nice, were can i order XD

looks different lol like it

Sorry to re-start an old thread guys but has anyone else seen photo's of quad exhaust system's. I quite like this

Wow that is one epic thread bump, nearly 5-years old this one lol!

Don't think I have ever seen any pics of a Fabia quad exhaust setup. That twin-pipe looks quite good tho, although the angle that right hand tailpipe exits at is quite severe, I'm not sure how conducive that will be to good gas flow.

I thought that. I dont think it will be that good at functioning properly. I think a proper 2 pipe set up would split up alot less further down than that.

Maybe even the headers

Suggest you search threads on the Milltek Catback, that has one exhaust tip inline with the full pipe and one offset slightly to the side.

 

Only the inline one gets dirty, tells you all you need to know about how they flow.

 

Anything set off to one side is just for show and doing precious little for the flow of the exhaust.

Right on Sparkly - as you correctly observe, this set up despite 'looking good' - in fact would have a detrimental effect on gas flow, and has no advantage to offer whatsoever.

The Milltek differs from the design above in that it has a single exit from the backbox which then branches off the second tailpipe. The right hand ''branch" pipe soots up slightly slower than the left but still gets dirty. When I first bought the exhaust there was zero flow down the right hand pipe and it made a blowing sound as a result. Quick email to Milltek and they sent out a replacement tailpipe assembly and the issue was sorted.

Would be interesting to see what would happen on that one above.

Milltek pipes:

The Milltek differs from the design above in that it has a single exit from the backbox which then branches off the second tailpipe. The right hand ''branch" pipe soots up slightly slower than the left but still gets dirty. When I first bought the exhaust there was zero flow down the right hand pipe and it made a blowing sound as a result. Quick email to Milltek and they sent out a replacement tailpipe assembly and the issue was sorted.

Would be interesting to see what would happen on that one above.

Milltek pipes:

Shiny

Maybe like on the 'Venturi Effect',  

or maybe the 'if it looks good, that is good enough.

Well it doesn't take a genius to work out you would get near no flow from the drivers side exhaust tip but doubt you could say it would be detrimental to exhaust flow.

Any how guess no one has seen a set up similar to this then.

The original

http://www.skodaturkey.com/showthread.php?t=1535

Well it doesn't take a genius to work out you would get near no flow from the drivers side exhaust tip but doubt you could say it would be detrimental to exhaust flow.

It's split in the back box so the problem you would get it that the exhaust gases would flow through path of least resistance.

Any how guess no one has seen a set up similar to this then

If the gases were mainly trying to go down the left hand pipe and were essentially ignoring the more tortuous route would that not potentially increase back-pressure and reduce performance?

I don't know the answer to that as I'm not technically minded enough but would seem possible.

If your family or your granny had a real fire & a chimney you will have learned about Draw up the lum.

 

(i think my Grannies flue was designed by Jetex.)

I am also not technically minded when it comes to this kind of this.

I have read on a turbo car you require some back pressure also things like trying to keep exhuast gasses hot as they flow quicker but as I stated, know very little and only picking info up trawling The Internet

If your family or your granny had a real fire & a chimney you will have learned about Draw up the lum.

 

(i think my Grannies flue was designed by Jetex.)

I'll try not to think too hard about what might be happening up inside Grannies flue lol

Open flues rely largely on the outside wind to cause an updraft and the heat from the flue gases. Obviously heat rises.

If that second twin exhaust tip was pit onto a case, would the gases going through the left pipe (they will always take the easiest route) cause air to be drawn in the right pipe?

It might get a few fumes going through it, but not alot if im thinking about this right haha.

& the Venturi effect does not apply here.

 

We need the Plumbers input to tell us when something is for cosmetic reasons rather then functionality.

ie Style over function or practicality.

 

Extra weight and expense and no perceivable gains other than looks.

I am a plumber/gas engineer

When i think about it in my head, it seems pointless. Just for asthetics. And even if it does work abit, it wont be an even share of gases between the two pipes.

You cant really compare it to an open flued fire, because theres so many things which are completely different.

I think the way to do it properly is either split it at the back box (with an even length and amount of bends going to each tip) or split it at the headers and run it seperate all the way down.

That tip is just a bodge

Maybe like on the 'Venturi Effect',  or maybe the 'if it looks good, that is good enough.

Way way back in the last century, racing motorcycle orthodoxy was that the purpose of an exhaust pipe was to get the exhaust gases out the back of a bike, away from the rider's legs.  Dr. Gordon Blair of Queen's University Belfast used modelling to prove that the shape of an exhaust system could actually increase the output of an engine (four stroke and two stroke).

 

The hugely image conscious Red Bull have been very successful in F1 over the past few years and the exhaust system is considered to have contributed significantly to this - albeit largely due to aerodynamics.

 

However, don't let any of this discourage anyone from ignoring the R&D carried out by manufacturers and adding some desperately needed bling to their car - exhaust gas flow can't really be all that important

Edited 27 February, 201412 yr by vxh26

Very important with 2 Strokes.

&

Some Twinchargers use about the same Petrol to oil ratio as a 2 Stroke.

 

Golfs and other VAG TSi have available nice twin and quad tail pipes with a silencer box running in front of the rear Valance. (defuser.)

 

Anyway does a power increase achieved if any, offset the extra weight.?

'Just add lightness is usually the best cost effective tuning modification.'

Way way back in the last century, racing motorcycle orthodoxy was that the purpose of an exhaust pipe was to get the exhaust gases out the back of a bike, away from the rider's legs.  Dr. Gordon Blair of Queen's University Belfast used modelling to prove that the shape of an exhaust system could actually increase the output of an engine (four stroke and two stroke).

 

The hugely image conscious Red Bull have been very successful in F1 over the past few years and the exhaust system is considered to have contributed significantly to this - albeit largely due to aerodynamics.

 

However, don't let any of this discourage anyone from ignoring the R&D carried out by manufacturers and adding some desperately needed bling to their car - exhaust gas flow can't really be all that important

 

You are talking about something slightly different when you talk about the full exhaust system rather than simply the tail pipe tips.

 

There has to be something said for the fact that the tips connect back to a single exit point on the exhaust where the gases come from, this is most likely the only deciding factor on whether there is restriction or not?  The car is pushing out gas, it isn't being sucked out so the shape of the tips surely has no impact as long as they are not narrower than the pipe that goes before them.  That is to say they are purely aesthetic and the parts which influence power most on this car we know to be the downpipe and Cat, on other forums it is even argued that the car is less happy with an upgraded 2.75" exhaust system than the stock 2.25" due to lack of back pressure and that the optimum result would be had by simply cutting out the original cat and replacing it with a 100/200 cell race cat, no need for Milltekking at all.

 

Rather than a plumber I suggest we may need a musician though (brass band ideal) who could say how the tip will effect exhaust note, does the unusual Milltek design enhance sound at low/mid and full chat compared to the stock tips?

My comment was fairly tongue-in-cheek but I do agree with George's comment that the most effective tuning modification is probably to "Just add lightness".

 

In relation to that, and in view of my long-term aversion to unsprung weight, are smaller stock steel rims typically lighter than massive stock alloy rims?  Seems entirely counter intuitive (scratches head . . . considers rubbing tummy at same time but abandons idea as too demanding).