[1BadAssT-Rex]

So, I was talking to a major VW exhaust tuner shop that is local to me and they are willing to take my 2006 V8 and use it as a donor to prototype a very reasonably priced exhaust system. He said if there is a high enough demand...he is willing jig it and put it into production. None of this outrageously priced ($2K for 2 mufflers/$600 for a bypass pipe), cheaply welded option. He said he will need it for a few days or so to test out different mufflers for the exhaust note. Also, he will mock up set of headers if there was demand too. Would anybody want this? I know I do. I have for a long time. Also, would everyone want all 4 cats installed...or just the mandatory 2 to pass smog? Hmmmm....... Oh, and I told them about the site so they might come on here and post up.

 

[Bjowett]

The biggy when it comes to headers on the treg is that the manual claims the engine needs to be pulled for R&Ring one side. If I'm pullling the engine for a performance mod, I'd rather it be for more than bolting on a header...

 

[gaijin]

My choice would be for two Cats and the exhaust back from there.

Unfortunately, you do not allow for this option.

I think this cat-back option would be the most popular because it does not interfere with the Touareg's electronics, is an easy install and keeps the vehicle legal.

Shame I can't choose this option

 

[AZBob]

My real decision would be based on before and after dyno pulls. Anything else is heresay.

 

[nickm]

Best combination of least poluting + best sound + most power (in that order)

 

[1BadAssT-Rex]

My real decision would be based on before and after dyno pulls. Anything else is heresay.

Well, I'm not throwing out and HP/TQ numbers. I'm just trying to bring another option into the sad exhaust market for the Touareg. They are also building me a custom exhaust for my Mini and I had their exhaust on my '01 Jetta 1.8T. Me also being in AZ (Phx). You ever go to any of the Euro/VW meetings? Try www.azeuropeans.com for a local club. I will probably be at Pavillions this Sat night.

 

[volkswagendude]

I didn't want to start a new thread for help on where to find headers, but since I can't seem to be able to find any yet, did anything ever come up out of this 1BadAssT-Rex?

I do understand that the market was, and perhaps still is too small to warrant manufacture of headers for this sole application, but it seems that products like these tend to pop up a few years after a product cycle has ended, reason being that 1st owners have passed them on to 2nd owners, who tend to be real $$$ mod minded enthusiasts like myself. That said, the Touareg is still no BMW M car with a hard core crowd base willing to shell out on mod extremities, but I suppose it can't hurt to ask around and hope right?

 

[berserkerx]

Sorry to bring a thred back from the dead. But did anything come of this? I am sure this would help in the power department. If even just the headers. I think we could gain substantial power by just moving the cats further downstream.

 

[siberian]

What are they? Ceramic? Long or short?

siberian

 

[volkswagendude]

I don't think the OP has been on the forum in literally over a year. Strange, but he literally suddenly vanished.

berserkerx, I too feel that this V8 engine would benefit from headers. Probably not so much so on the cats, although I will be installing Magnaflow high flow, primary cats in the coming two weeks, so I can always report back on that.

 

[berserkerx]

I would definitely love to hear back on that. I mean isn't this the same motor that once went into the R8 that means it could be capable. Now to just keep shaving weight off here and there. Keep us updated on your headers for sure.

 

[siberian]

Again, long/short, ceramic... what are you aiming at getting out of them???

siberian

 

[berserkerx]

Ceramic for sure. I am trying to remember so if I am wrong just tell me. But short means power down low and long means power up in the high end right. I want power lower to mid range. I would definitely like it ceramic coated and I would love to see it chop some weight off all while giving power and taking some heat out.

 

[siberian]

The opposite.

What you need then is medium ones, but they're hard to come by as folks normally go for low end or top end speed.

Ceramics are great for dissipating heat but they are VERY fragile. And under no circumstance wrap them in tpae or other contraption they try and sell you. You will destroy the ceramics in no time.

siberian

 

[berserkerx]

I would personally go for the power down low and coat it. Then try to find a metal that is strong but yet light. I live at lower to mid range for most of my driving. So I don't need super long ones.

Are you in the know of how to make them Siberian?

 

[siberian]

No I don't know how to design them, but having raced a wee bit I'm familiar with the concept. The key is understanding how they work, what each compound will give you and the trade-offs in each.

Most people, who don't race that is, fall in the bracket you mentioned. I organized the group buy for the Durango Club with the person who designed the Mopar PPH headers. It was difficult finding enough people because there was no market (other than the initial Durango R/T series), but I did get the 15 people or so that was needed. These were a sort of mid-range ceramic coated. Right away I got people stating that to keep them cool you need to wrap the ceramics in this aluminum heat insulating tape - which is precisely what will destroy the ceramic headers in no time. The idea is right, keep them cool so that the temperature differential will suck out the exhaust gases better. But you just can't do that with ceramics and in any case that is precisely why you buy ceramics because of their heat dissipation capabilities. But they are very fragile and can crack easily if not handled carefully during the installation process.

With the Durango, it was relatively easy as there are so many other VAR parts you can buy to soup up the engine (cams, ram air intakes, TB change over...), nothing like that exists for the Touaregs. So not sure that headers alone will give you the bang for the buck unless a whole load of other items are changed to take advantage of it. Can you change the cams? Can you modify the TB diameter? Can you....?

So decide what it is you need, what trade-offs you're willing to accept, and whether it's worth the cash.

siberian

 

[volkswagendude]

Again, long/short, ceramic... what are you aiming at getting out of them???

siberian

Yes, the vast majority do live in the lower end , mid range, but when I mod something, I want 100% results when I plant my foot(WOT) for those few seconds that I must. Making my Egg more drivable and responsive during low end of the tachometer spectrum type of manoeuvres is just fine as it is.

Basically what I'm saying is, anything to bring down 1/4 mile times.

 

[siberian]

Let me repeat what I said, unless you change a whole host of items, simply adding headers will not make that much of a difference. As to adding top end speed not sure the aerodynamics are there to maintain stability.

A friend of mine in Hawaii was a cop with an R/T. His plan was to add a supercharger since he couldn't add the shaker ram air I had (his car was his duty car as well). I warned him to upgrade brakes and suspension prior to... he didn't.

Installed it, got called out, rolled and since he wasn't wearing a belt was killed. Senseless. There is more to it than adding horses and there's more to adding horses than headers.

siberian

 

[volkswagendude]

Let me repeat what I said, unless you change a whole host of items, simply adding headers will not make that much of a difference. ......

I can generally agree with that statement, except that the same 40 valve engine used in the Phaeton and Audi A8, had about 335hp versus the 310HP in the Touareg(in AXQ 40 valve guise). Now I've never really dug in as to why the Phaeton and Audi A8 40 valve engine output more HP and and to a lesser extent more torque than the same Touareg 40 valve engine, but immediately the exhaust manifold design rings bells and springs to my mind, although I might be wrong. If I'm not wrong, then this very well be one application that will greatly benefit from well designed headers.

Any takers on this?

 

[siberian]

Could be a higher compression and you're comparing the A8 to the V8 FSI which does put out 335 if I'm not mistaken.

siberian