Z4M update - Eisenmann exhaust
- Thread starter Booner!
- Start date
Whilst I agree the cost will appear bonkers to some, it costs that much for a reason, as does any good S54 powered exhaust system or backbox.
You're not just paying for a very well made product but paying for signifgicant R&D time. Getting the back pressure right is very important on S54 powered cars. Get it wrong and there can be a noticeable effect on the characteristics of the engine. Unfortunately, getting it right costs.
There are exhausts that can be had new for £350 to £450, Scorpion for example. But you just need to scour the internet to see why a box at that price can come with problems: poor pressure, baffles coming unsucure etc. You've got to remember theres a lot more to S54 systems too so more material and high quality welding to be done.
FWIW, I've had Larini, Eisenmann and Supersprint exhausts on my M3's and IMO the best noise/cost solution is simply putting a non-resonated centre section on with an OEM backbox, such as the Miltek or Supersprint parts.
Unfortuantely, paying a price for quality parts for S54 cars comes with the territory. Thats why other cars are more suitable to the wallet if extensive modding is your thing. The one thing I would say is that if you buy a qulaity item, such as an Eisenmann is very sellable 2nd hand at decent value. If the OP got his exhaust for £700, he got a very nice deal IMO.
I missed this - I presume you're referring to me?
It was new! Retail is €720 I think, so ~£600. That included 'free' fitting..
The he re-welded the bottom join on the right-sided bracket as it was in the way of something, or he didn't like the way it fit..
FWIW, my Lolvo needed a new backbox, and Volvo wanted in excess of £300 for an OEM part!
I could totally agree you your point to an extent (even then only to a point given the cost) if we were talking about a full system. Especially if we are talking about manifolds too.
But I fail to see how they justify spending ridiculous amounts of time and money for the last part of the exhaust stage.
Whats the point when the majority of flow management has already been done?
You aren't even getting a complex dual exit backbox arrangement for the money!
I think part of the problem is that the S54 is in a pretty high state of tune when it leaves the factory and can be quite tempremental to any modifications.
I'm getting into territory I'm not particularly knowledgable about but I thought the back box was quite an important part of controlling the pressure of exhaust gasses? I could be wrong.
With an engine that revs to over 8,000 RPM there's going to be quite a pressure build up at top end and although there are fuelling controls to compensate for this, if you get it wrong it can have some nasty effects on the engine.
I totally agree with you, good quality aftermarket M parts are on the whole, horrendously expensive but personally I'd rather pay more for a part knowing it's been developed properly and with the longevity of the engine in mind.
I had hoped when I bought my current M3 that the ///M tax would have softened, unfortunately not!
EDIT: I also meant to say it does get even more mind bending when you consider there is absolutely no performance gain to be had be changing the back box alone. Only real reason to do it is aesthetics and noise. I'm still a big fan of Eisenmann products though. IMO, there's more affordable options out there is its just the looks and sound your after but thats another topic altogether.
Last edited:
I missed this - I presume you're referring to me?
It was new! Retail is €720 I think, so ~£600. That included 'free' fitting..
The he re-welded the bottom join on the right-sided bracket as it was in the way of something, or he didn't like the way it fit..
FWIW, my Lolvo needed a new backbox, and Volvo wanted in excess of £300 for an OEM part!
Of course, your Z3 only has one backbox doesnt it
Unfortunately I don't think I can currently afford the running costs (let alone purchase price) of an M CoupeOf course, your Z3 only has one backbox doesnt it
Quad pipes were the wrong side of a grand anyway, plus I'd have to cut into the bumper, yada yada..
![[TW]Fox](/data/man-of-honor/2009.png){kind=avatar}
Unfortunately I don't think I can currently afford the running costs (let alone purchase price) of an M Coupe
Quad pipes were the wrong side of a grand anyway, plus I'd have to cut into the bumper, yada yada..
I was just wondering why it was half the price of the M system and assuming it had to be 2nd hand.
But then remembered its half the price because its half the exhaust
And worth every penny. My Coupe sounds so good. There's a sweet spot around 4k.. not helping my fuel consumption though[TW]Fox;18011539 said:
I did think about the quad pipes, but the main reason (apart from cost) was that I don't want my car to look like something it's not.I was just wondering why it was half the price of the M system and assuming it had to be 2nd hand.
But then remembered its half the price because its half the exhaust
![[ui]ICEMAN](/styles/overclockers/avatars/5.png){kind=avatar}
Soldato
- Joined
- 18 Oct 2002
- Posts
- 2,612
- Location
- Florida/UK
They do sound pretty good, I'm considering putting one on my 135i. To be honest, in comparison to what I'm used to, I'm actually finding modifying the BMW incredibly cost effective! For what I'd pay for a Porsche steering wheel, I've got about 10 things done already!
Associate
- Joined
- 16 Jul 2010
- Posts
- 154
- Location
- London
Eisenmann do sound better than BMW performance exhaust on my other halfs 135i is the only option we regretted sounding too tinny and cheap. Be interesting to know if eisenmann gets any louder once sooted up, the older ones did taking the drone away too.
They do. I was told to phone the place back after 2500km to tell them what I thought.
I was considering removing the mid-section, but I think it'll be quite loud enough and barely drones.
But then I've only done a couple hundred miles since I've had it.
Permabanned
- Joined
- 15 Dec 2010
- Posts
- 1
I'm a filthy spammer and was cillit banged y0!
