My German Autobahn Mile Muncher - '01 Titanium Silver E39 M5 - Page 6 - BMW M5 Forum and M6 Forums
E39 M5 and E52 Z8 Discussion 1998-2003 Advertiser's Forum

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post #51 of 254 Old 16th January 2018, 06:28 AM
kiznarsh
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Those tips look good!

Sucks you can't get away without mufflers, but you also have the Autobahn so...it evens out.

'03 M5 | 987.2 Cayman | @kian.ski
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post #52 of 254 Old 16th January 2018, 07:37 PM Thread Starter
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Thanks, Kizarnish. Those are the only ones available from Eisenmann. 4x76mm mufflers were discontinued, according to them there was some power loss with that exhaust. I just hope these tips won't sit too close to the bumper since they are larger than stock tips.

Muffler delete sure would be a simple and cost-effective solution. Do you have it on your M5? If yes, how do you like it?
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post #53 of 254 Old 16th January 2018, 10:40 PM
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Quote:
Originally Posted by sreten View Post
Thanks, Kizarnish. Those are the only ones available from Eisenmann. 4x76mm mufflers were discontinued, according to them there was some power loss with that exhaust. I just hope these tips won't sit too close to the bumper since they are larger than stock tips.

Muffler delete sure would be a simple and cost-effective solution. Do you have it on your M5? If yes, how do you like it?
Interesting, I have the 'Race' versions with 4x76mm tips and didn't feel any power loss. Maybe the sport versions in 4x76mm only do ?

One thing i've noticed is the Eisenmann's sound alot better when they are warmed up. When cold they sound quite raspy.
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post #54 of 254 Old 16th January 2018, 11:44 PM Thread Starter
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Not sure, I was told that by Reuter Motorsport and Eisenmann. Didn't ask for details, but probably nothing major.

Never heard them in person so I'm about to experience that very soon. Though I believe Sport and Race are very different.

Last edited by sreten; 16th January 2018 at 11:45 PM.
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post #55 of 254 Old 17th January 2018, 12:35 AM
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Muffler delete sure would be a simple and cost-effective solution. Do you have it on your M5? If yes, how do you like it?
Yeah, they were deleted by the previous owner and I love it. I've had louder exhausts and this one sounds just right. It's a good balance between "race car" and "elegant sport sedan." The stock setup is too quiet, IMO. Same thing on my previous B8 S4. Plus shedding that weight really helps my fuel economy.

It's also noticeably louder outside the car. I had a friend follow me once and as we parked, he came out and asked me what exhaust I had on there, haha. He couldn't believe it was the stock setup.

'03 M5 | 987.2 Cayman | @kian.ski
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post #56 of 254 Old 18th January 2018, 12:09 AM Thread Starter
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I've heard and read nothing but a praise about muffler delete. I'm glad you like it and would love to hear it one day, though not sure if that will happen while I'm in Germany.

I agree that the stock setup is too quiet, I put 250 miles on the M5 yesterday and it drives better than ever, just missing more sound out of that lovely V8. When the no speed limit sign comes up, there just isn't a better car I would like to pilot.
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post #57 of 254 Old 18th January 2018, 12:25 AM
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I've heard and read nothing but a praise about muffler delete. I'm glad you like it and would love to hear it one day, though not sure if that will happen while I'm in Germany.

I agree that the stock setup is too quiet, I put 250 miles on the M5 yesterday and it drives better than ever, just missing more sound out of that lovely V8. When the no speed limit sign comes up, there just isn't a better car I would like to pilot.
I could maybe think of a few that would be more fun for a one-and-done, but nothing beats it for DD duty or for constant mile munching, that's for sure.

Lose this thread, can't wait for more updates, you're doing everything the way I would but better.
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post #58 of 254 Old 21st January 2018, 09:44 PM Thread Starter
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Got the exhaust fitted!

But before getting to that part, I must jump back to the transmission oil. When I did the clutch job I used Liqui Moly 75W-80 GL 3+ which is not a bad oil, but it was simply unbearable when the car was cold. First 3 gears and especially the 2nd was really difficult to shift. After the car is warmed up, all of the gears were buttery smooth so I decided to try something different.

After doing some research, I found that Royal Purple Synchromax is amongst popular on the board, but that stuff isn't very easy to find here.

I got in touch with Motul directly and at their recommendation, I bought 2L of Motul DCTF. Mainly used in dual-clutch gearboxes but it's also applicable in conventional gearboxes. Most importantly it fulfills proper specification - SEA 75W and BMW MTF LT-1 & 2 specifications.

The data sheet can be found here - https://s3-eu-west-1.amazonaws.com/m...pdf?1508420965

While the car was up in the air for the exhaust install, I used that opportunity and changed the tranny oil.







This morning I had a nice cold start and it's already much better! I can shift in the first 3 gears without much effort while before I had to work to slot into the 2nd gear. Of course, it's still not fully warmed up smooth, but it's a vast improvement from before. This oil is definitely a better choice for cold shifting.

Now back to the exhaust. I had a nearby shop to help me with this as I was lacking proper tools and didn't want to try this on my garage floor.

While the finish quality is great, the fitment could be better.

It was a pain to get everything aligned properly. Once we mounted the Eisenmann mufflers, the right one was sitting too close to the diffuser and left one was actually touching it. So after much adjustments we got it to clear the diffuser, but I think for how expensive the exhaust is the fitment should've been better. Eisenmann does tell you that the diffuser needs to be trimmed down but I wasn't willing to do that. After learning a couple of new swears in German, it all worked out well. ��











I'm still gathering impressions, but the M5 is now definitely making all of the right noises!

On idle and lower rpms it's very much the same to stock but when you push it, it's where the Eisenmann earns its money and reputation. It's just a glorious exhaust note.

Though I must admit I wish it was a little louder and I'm hoping that will change once the exhaust is fully broken in as I drive it more.

I will try to get a nice video soon. It'll take some getting used to those big guns in the back now. ��

Last edited by JohnAnthony; 24th April 2018 at 02:48 PM.
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post #59 of 254 Old 22nd January 2018, 01:28 AM
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So shiny!

I'm not too familiar with that exhaust but do they all stand out like that? Seems like they stick out too far, but maybe it's just the angle.

Here's how my generic tips are (old pic with the stock diffuser).


'03 M5 | 987.2 Cayman | @kian.ski
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post #60 of 254 Old 22nd January 2018, 01:41 AM
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My German Autobahn Mile Muncher - '01 Titanium Silver E39 M5

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Originally Posted by kiznarsh View Post


I think yours are pushed in further than OEM. Angle plays a big part but they look about the same as OEM.


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Last edited by mac214; 22nd January 2018 at 01:41 AM.
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