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On the QST Tuning webpage, the MTM Exhaust costs a whopping £2700 !!! while the Miltek costs £850. Is there much difference in sound and performance ? Has anyone here fitted a MTM willing to provide feedback.

Something I read on EVO Mag .... MTM RS6 Review ...
"Next on the 'to do' list is change the exhaust from the downpipes back. This costs a further £3407 and liberates an extra 12bhp. It does this via a clever butterfly valve within the pipes that opens up once boost goes over 0.8bar (max boost is 1.31bar) effectively creating a straight-through exhaust. It makes an astonishing sound. It's loud enough to bring people out of nearby houses to see what's going on (it happened, really, during our test). The quality of the noise is pure Nascar and nothing like any turbo car I've ever experienced. But it's perhaps a little too loud; good job it's not a mandatory part of the spec.

"

There is another thread recently about mod's that touches on the benefits of zorst changes.

Summary was catback is 'cosmetic' as there is little chance of getting a performance gain unless you address the OEM cats as they are the first resistance to flow. So full system in conjunction with a remap etc, is the only way you'll get return on investment with an exhaust change.

Given the costs in these catback options you'd be best off with the Milltek (IMHO). £2700 v £850 plus fitting for a nicer noise...its a no-brainer.

I have the MIlltek and really enjoy the difference in output from OEM, much more enjoyable and not intrusive under sensible driving or cruising.

If you go for catback only, don't look for performance gains. I am sure there are others who will disagree, especially those with interests in tuners or feeling good about the money they have spent on theirs.

rs666 wrote:There is another thread recently about mod's that touches on the benefits of zorst changes.

Summary was catback is 'cosmetic' as there is little chance of getting a performance gain unless you address the OEM cats as they are the first resistance to flow. So full system in conjunction with a remap etc, is the only way you'll get return on investment with an exhaust change.

Given the costs in these catback options you'd be best off with the Milltek (IMHO). £2700 v £850 plus fitting for a nicer noise...its a no-brainer.

I have the MIlltek and really enjoy the difference in output from OEM, much more enjoyable and not intrusive under sensible driving or cruising.

If you go for catback only, don't look for performance gains. I am sure there are others who will disagree, especially those with interests in tuners or feeling good about the money they have spent on theirs.

Totally agree. Cat-back would give a couple of BHP if that, but the sound would improve & the exits look a little sweeter, but that's about it.

I had Milltek cat-back on my RS6 for about 12 months, then decided to have the whole system replaces including downpipes, sports-cats & a new matching cat-back. It was not cheap (Milltek) but the difference in every dept. was amazing.

Finally got to give the car a proper clean yesterday and found my Milltek had melted the valance like your Paul. Not too bad, you can't notice unless you get close.

rs666 wrote:Finally got to give the car a proper clean yesterday and found my Milltek had melted the valance like your Paul. Not too bad, you can't notice unless you get close.

This was defo an issue, however the newest Milltek cat-back which i had installed when i had the downpipes & sports-cats fitted, as the original cat-back did not match up is a much better fit & n melting since then (looks far flusher as well). I got the rear valance replaced a couple of weeks ago anyhow, as i was always going to sell my RS6 in te 1st half of this year.

So get a newer Milltek cat-back & a new rear valance & you'll be sorted IIRC the rear valance was about £40 fitted.

Guys, so how much is the full Miltek system cost approx ? I suppose the MTM £2700 is the full system then too ??

Talk to Kim at QST he will tell you the config. Got to be for that price, but IIRC MTM do a quad pipe system which might account for a high price on a catback.

I have the full Miltek exhaust on my RS6+ which was significantly cheaper than the MTM one. It produces 540BHP and 750Nm. I was assured by Kim Collins at QST that there is no difference between the two.

Miltek owners .... how does your exhaust compare to this MTM one then ? Very much the same, different, louder/quiter etc.....

http://www.hoppenmotorsport.com/RS6_sound.htm

Sounds lovely ... also would like to know how it compares to the Milltek otherwise I'm going to have to wait a couple of weeks to here it first hand myself.

Rich.

The sound from the Milltek exhaust is fantastic. I have not compared it to the MTM one. I drive most of the time with the window open, pisses off the wife but gives me a grin from ear to ear.

I concur with the above. Only difference being I have no wife to piss off!

Does the quad pipe have any performance advantages or is it purely acoustics?? Will have to borrow a sound meter to determine what dB you get per £! £850 sounds a bargain.

A friend of mine is a motor vehicle claim adjudicator, watch that insurance small print if you write-off your pride & joy and have any non-standard bits. She has some savage horror-stories of major £'s claims being denied for very minor infringements... Although you are between a rock and a hard place, as one of my peers had a factory-fitted prodrive exhaust fitted to his new subaru and despite having clean licence, no claims and many years of driving under his belt, many insurers wouldnt offer a quotation purely because of the exhaust!

Declare the mod's it just not worth it. I have a cousin who is a loss adjuster and he says the same, eagle eyes, anything not std. bye bye no settlement