[Haze]

Looking to put an exhaust on my g82.

Currently interested in:
MAD resonated midpipe
Eisenmann Race exhaust.
Going to keep stock dowpipes for now for warranty. May change to MAD in the future, but unsure of catted or catless.

Will this combo fit? Does this sound like a good setup? Anyone with an eisenmenn exhaust have any sound clips as I could only find a couple?

Any better recommendations would also be appreciated.
From my research the MAD resonated is the best option. Was looking at the AA EL midpipe, but from what I've read the MAD single resonated midpipe is the best option.

Looking for a deep mature exhaust sound with no rasp or drone.

Thank you.

[Berzerker]

I prefer a single over EL, either MAD or AA but they'll sound identical if both single, so MAD since it's cheaper.

If you're worried about rasp/drone, I would highly recommend not changing the stock muffler. It's really good at removing drone, combine that with an unresonated midpipe instead and you'll get a great deep throaty tone without any rasp or drone. Adding in a valve controller like the SST will give you more fine control over the sound as well. Swapping downpipes will introduce some rasp at the high end as well.

If you're really set at changing the muffler or downpipes, stick with a resonated midpipe, but IMO there's so many variables with exhausts and so many opportunities for undesirable rasp/drone that I always recommend people leave the downpipes and muffler stock and just go with an unresonated midpipe. It'll add a lot of tone and also volume, IMO enough for most people.

[mike@x-ph.com]

You are doing right by getting the resonated single with the race exhaust. It will keep the sound clean with a minimum rasp.

That said, im not sure it will fit; I have not seen anyone before you test these 2 products together.

[Haze]

From what I've read, the resonated midpipe is the best option, as far as axle back. I do like the stock, but its like a saggy diaper also haha, so that's really the only reason for changing.

From my research, changing the axleback does not change sound very much/if at all, and I'm not sure about performance gains.

[Berzerker]

Originally Posted by Haze

From what I've read, the resonated midpipe is the best option, as far as axle back. I do like the stock, but its like a saggy diaper also haha, so that's really the only reason for changing.

From my research, changing the axleback does not change sound very much/if at all, and I'm not sure about performance gains.

From experience, changing the axleback amplifies the sound as it was with just a midpipe and/or downpipe swap, and can introduce a fair amount of drone.

[Haze]

So maybe I should just get a midpipe and keep the stock axleback. As for downpipes, I do want, but I do not want to void my warranty.

[mike@x-ph.com]

Originally Posted by Haze

So maybe I should just get a midpipe and keep the stock axleback. As for downpipes, I do want, but I do not want to void my warranty.

Downpipes do not void your warranty, but might trigger the check engine light which can be annoying.

if you are flash-tuned, you can do catted downpipes + the resonated single

If you are not flash-tuned, keep the stock downpipes and get a full catback with a single midpipe and axle back.

A third option is to get the active autowerke catted downpipes that do not trigger the check engine light + the resonated single midpipe.

[Berzerker]

Originally Posted by Haze

So maybe I should just get a midpipe and keep the stock axleback. As for downpipes, I do want, but I do not want to void my warranty.

Originally Posted by mike@x-ph.com

Downpipes do not void your warranty, but might trigger the check engine light which can be annoying.

if you are flash-tuned, you can do catted downpipes + the resonated single

If you are not flash-tuned, keep the stock downpipes and get a full catback with a single midpipe and axle back.

A third option is to get the active autowerke catted downpipes that do not trigger the check engine light + the resonated single midpipe.

I would be very cautious with downpipes. Since they're directly connected to the turbos and aren't *just* a path for exhaust to flow directly out of, BMW can deny warranty claims if anything may happen.

How many times they've done it, who knows, but I would generally avoid anything that directly connects to an engine or turbo such as intakes or downpipes if you care about warranty.

As for OP, a midpipe swap is the safest and easiest thing to get more volume and sound out of the car without having to deal with warranty issues.

[tom @ eas]

Originally Posted by Haze

So maybe I should just get a midpipe and keep the stock axleback. As for downpipes, I do want, but I do not want to void my warranty.

Dealerships can absolutely flag cars for aftermarket downpipes (seen it happen personally), retailers need to be careful when making a blanket statements like this in order to make sales.

Just because someone at another dealership got away with something isn't an absolute guarantee your dealer will be the same. If you plan to mod, simply work with an independent for the general maintenance, save the big stuff for warranty if an issue arises during your warranty period or wait until the warranty expires. Depending on on the claim, the aftermarket parts may need to be removed beforehand in order to keep your warranty intact.

Most vehicles will need little to no warranty work, so it's not much of an issue - but being prepared beforehand is always a good idea.

[mike@x-ph.com]

i have been on this forum for 15 years I don't remember any threads about warranties being voided due to downpipes.

Based on the data we have, concerns about downpipes is unrealistic in my opinion.

[tom @ eas]

Originally Posted by mike@x-ph.com

i have been on this forum for 15 years I don't remember any threads about warranties being voided due to downpipes.

Based on the data we have, concerns about downpipes is unrealistic in my opinion.

So based on your data, you’d have no problem guaranteeing it?

[mike@x-ph.com]

Originally Posted by tom @ eas

So based on your data, you’d have no problem guaranteeing it?

I gave my opinion based off 15 years of data, hundreds of thousands of users.

From the data i have seen, i dont see it a concern at all. im not telling you how to live your life, if you want to be concerned about it, do you.

Its not my job to guarantee anything.

[Info@mad-us.com]

Op,

As always, I recommend starting with just the midpipe and assessing from there. If you're satisfied with the tone, you might want to stick with it. However, if you're seeking a bit more volume, consider adding a valve controller as your next modification.

Dislike the appearance of the rear muffler? Explore the option of a rear axle-back exhaust. While I can't recall anyone using an Eisenmann with our single, it should fit if it aligns with the factory cutpoints (middle dimple).

I might be biased, but I stand by our exhaust. If you're pleased with the sound, you could potentially save enough money to also incorporate an intake into your upgrades.

[Haze]

I could talk to my dealer and see what they say about downpipes.

[Berzerker]

Originally Posted by Haze

I could talk to my dealer and see what they say about downpipes.

I honestly wouldn't bother. Their answer is going to be something like "well it's honestly up to BMW." They don't make any warranty coverage determination. They just submit stuff to BMW and they say yes/no. And they'd definitely be inclined to say no if they could.

If you care about warranty just leave them stock.

Seriously, try just the midpipe first w/ an SST valve controller. I think you'll be pleasantly surprised by what just that can do.

[Skyscraper]

Try painting the muffler flat black with BBQ paint. It really helps the look.

[Berzerker]

Originally Posted by Skyscraper

Try painting the muffler flat black with BBQ paint. It really helps the look.

I also went this route and with the M Perf Exhaust tips. Much happier than with a custom axleback and no chance to introduce any drone keeping the stock muffler.

[Haze]

Originally Posted by Berzerker

I also went this route and with the M Perf Exhaust tips. Much happier than with a custom axleback and no chance to introduce any drone keeping the stock muffler.

Interesting take with the BBQ paint. Black would look good too as my g82 is skyscraper grey. Black goes well with the color.

[Valvetronic Designs]

Tons of great options here, but if you looking for the highest sound quality, take a listen to this. This is our full titanium exhaust setup. Would cost you about the same as the setup you are interested in but you get to enjoy a more exotic material and, in our opinion, even better sound!

Take a listen:

[Haze]

That sounds really good. Do you have a sound clip of the sport exhaust?

[ChrisM4]

So in Canada at least if you run aftermarket catless downpipes (Even with a catted O2 spacer that doesn’t trigger a cat code) it will trigger a code that’s stored. The dealership will see it when they run their scans. (The label on the code is “aftermarket downpipes detected” or similar…I saw the readout posted here on the forum somewhere but can’t remember the exact wording)

I was told by an SA that if you have a significant drivetrain warranty issue they run these diagnostics, send to BMW and also depending on the issue fly an engineer out to go over the car. Your car will 100% be flagged in the system.

So take that info how you will. The same detection and storing of a code occurs if there’s a piggy back (JB4 or Racechip) as well.

The good news is any failures are really rare and most people wait several thousand km after the break in service to actually mod so your chances of having an issue are low with mild mods.

The old saying “you have to pay to play” comes in here so mod at your own risk.

Personally unless you’re shooting for consistent 9s in the quarter mile I wouldn’t bother with downpipes, they support a ton of power stock.

[Berzerker]

Originally Posted by Haze

That sounds really good. Do you have a sound clip of the sport exhaust?

Just a warning, titanium stuff is really loud. If you're looking to not go overboard, I wouldn't do anything titanium.