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      05-27-2019, 03:28 PM   #1
Aliendex
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Pulling the trigger in the next weeks, exhaust options?

Hi guys,
Just sold my 640d a couple of days ago to pull the trigger on a 14' M6 F06 very well loaded that stays on my budget.

I'm a bit concerned about the exhaust note, because I have previously test driven some M6 with standard exhaust and, except the cold start, the car isn't really screaming out the V8 as I like.

Obviously coming from a diesel it's another world, but thinking about a petrol V8 engine with 560ponys so quite isn't the way I like it.
Some of you did the trick to the exhaust valve, but the difference is very marginal.

In this months I've watched a lot of YouTube videos with an insanely amount of different brand, none of them is cheap.

Sure, the RPi GTM is the best choice to go except the price, but deciding with my brain and not with my heart, I will like to do some cheap mods/swap first.

Anyone can suggest an exhaust system that doesn't have the price tag just because it's an M6?

I'm even open to hear if someone who would like to sell an used exhaust system.
BTW I'm located in Italy, so if anyone is selling from Europe would be nice.

Hopefully you will see the photos of the car soon, I love the M6 Grand Coupé!!
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      05-29-2019, 05:27 PM   #2
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I have AMS catless downpipes with Meistershaft GTC full exhaust,3.5 inch front to back,it sounds absolutely nuts in person it has a deep roar because of the larger pipes,Eisenmann race sound very similar but they have no valve control if you want it quiet on long trips
There really is no cheap exhaust for this car, speaking for the GTC exhaust you can really see why there so expensive when you have it in front of you the quality of the welds and piping is crazy,Akra Evo is another amazing exhaust but a little more on the quiet side but matched with catless downpipes wakes them up.
Your best bet is to watch the members classified for a used set for downpipes and exhaust system (this is what I did) but still be prepared to spend 3 to 4k on used, the quality stuff holds there value but then again its still less than half price new.Remember you get what you pay for.

Here is a clip of a vid that may inspire you,he has Eisenmann race and catless downpipes, RK intakes, tune.
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      05-30-2019, 04:18 PM   #3
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In Canada and I went the most economical route I have seen thus far. XS Power Downpipes which has 3.15 inch and fit with the stock heat shield for $279.99 US Dollars and Megan Racing Supremo Exhaust (basically axle back) for like $650.00 US and all in with installation cost me $2500 Canadian......and it sounds amazing!! Super deep and loud, u can feel the exhaust lol. Cold start is amazing. It has gotten me a lot of compliments from a very unknown duo haha
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      07-22-2019, 04:10 PM   #4
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Hi guys,
Thank you for the answer, really appreciated.

I think I'm going to start modding the original non CP exhaust system before spending crazy money.

I like the original exhaust system but seems a bit restricted for what engine we have under the bonnet.
Does anyone cut off the center silencer? If so, what's the gain in sound?

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      12-25-2019, 01:42 AM   #5
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Quote:
Originally Posted by Aliendex View Post
Hi guys,
Thank you for the answer, really appreciated.

I think I'm going to start modding the original non CP exhaust system before spending crazy money.

I like the original exhaust system but seems a bit restricted for what engine we have under the bonnet.
Does anyone cut off the center silencer? If so, what's the gain in sound?

I'm curious about this too. I'm looking for something that would increase and improve the exterior sound, but with stock or near-stock interior sound levels.
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      12-27-2019, 07:02 AM   #6
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That is only the M6 Performance Exhaust or the the next level the Akrapovic titanium wich costs a fortune.
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      01-13-2020, 12:57 AM   #7
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I’ll be selling my full F06 Titanium Akrapovic exhaust with carbon tips here soon. Just need to buy a stock setup and then I’ll be listing it. Let me know if you want to do a swap plus cash on your end.
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      01-14-2020, 01:27 PM   #8
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Quote:
Originally Posted by FullThrottle View Post
In Canada and I went the most economical route I have seen thus far. XS Power Downpipes which has 3.15 inch and fit with the stock heat shield for $279.99 US Dollars and Megan Racing Supremo Exhaust (basically axle back) for like $650.00 US and all in with installation cost me $2500 Canadian......and it sounds amazing!! Super deep and loud, u can feel the exhaust lol. Cold start is amazing. It has gotten me a lot of compliments from a very unknown duo haha
If you’re talking about Yuri and Jakob, I’d love to see them review an M6 and compare it to their recent M8 drives, have you asked them if they’d review it?
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      01-14-2020, 01:29 PM   #9
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do catless downpipes first, makes a big difference in sound, then delete rear mufflers for more. the OEM piping is pretty good, not very restrictive.
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      01-14-2020, 08:46 PM   #10
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Quote:
Originally Posted by FullThrottle View Post
In Canada and I went the most economical route I have seen thus far. XS Power Downpipes which has 3.15 inch and fit with the stock heat shield for $279.99 US Dollars and Megan Racing Supremo Exhaust (basically axle back) for like $650.00 US and all in with installation cost me $2500 Canadian......and it sounds amazing!! Super deep and loud, u can feel the exhaust lol. Cold start is amazing. It has gotten me a lot of compliments from a very unknown duo haha
how was the fitment of these downpipes ? any modification ??
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      01-14-2020, 11:51 PM   #11
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I installed catless downpipes first I wasn't satisfied with the sound. Then I got an Eisenmann Race axle back exhaust, still wasn't happy. But when I took the center resonator out I was satisfied. You can hear the turbos spooling a mile away.
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      01-15-2020, 10:08 AM   #12
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Quote:
Originally Posted by M6ORL View Post
how was the fitment of these downpipes ? any modification ??
I installed the same downpipes, fit is great, needs minor bracket adjustment if anything to bolt down, but we are talking almost nothing, the pipe bends are perfect. its just the hanger bolting can be a little off, but a little elbow grease to bend the bracket to the right spot is really easy. best downpipes for the price!
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      01-15-2020, 12:33 PM   #13
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Quote:
Originally Posted by RagtagXMASTER View Post
Quote:
Originally Posted by M6ORL View Post
how was the fitment of these downpipes ? any modification ??
I installed the same downpipes, fit is great, needs minor bracket adjustment if anything to bolt down, but we are talking almost nothing, the pipe bends are perfect. its just the hanger bolting can be a little off, but a little elbow grease to bend the bracket to the right spot is really easy. best downpipes for the price!
ive been back and forward trying to do the downpipes for a while now but after seeing that m6 on the video on top im convince now this is what i need lol anywyas thank for the input man im going to try those...
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      01-15-2020, 12:41 PM   #14
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Quote:
Originally Posted by M6ORL View Post
ive been back and forward trying to do the downpipes for a while now but after seeing that m6 on the video on top im convince now this is what i need lol anywyas thank for the input man im going to try those...
I have a youtube channel with a couple of exhaust clips of my setup. if you like to take a listen as well.



This is catless with the valves open
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      01-15-2020, 06:19 PM   #15
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Can you post a video of it?




Quote:
Originally Posted by Whipple View Post
I have AMS catless downpipes with Meistershaft GTC full exhaust,3.5 inch front to back,it sounds absolutely nuts in person it has a deep roar because of the larger pipes,Eisenmann race sound very similar but they have no valve control if you want it quiet on long trips
There really is no cheap exhaust for this car, speaking for the GTC exhaust you can really see why there so expensive when you have it in front of you the quality of the welds and piping is crazy,Akra Evo is another amazing exhaust but a little more on the quiet side but matched with catless downpipes wakes them up.
Your best bet is to watch the members classified for a used set for downpipes and exhaust system (this is what I did) but still be prepared to spend 3 to 4k on used, the quality stuff holds there value but then again its still less than half price new.Remember you get what you pay for.

Here is a clip of a vid that may inspire you,he has Eisenmann race and catless downpipes, RK intakes, tune.
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      01-20-2020, 12:50 PM   #16
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Quote:
Originally Posted by 14SGM6GC View Post
I’ll be selling my full F06 Titanium Akrapovic exhaust with carbon tips here soon. Just need to buy a stock setup and then I’ll be listing it. Let me know if you want to do a swap plus cash on your end.
In Orlando -- very interested 14SGM6GC How soon?
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      01-20-2020, 12:52 PM   #17
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Quote:
Originally Posted by caninefinest View Post
I installed catless downpipes first I wasn't satisfied with the sound. Then I got an Eisenmann Race axle back exhaust, still wasn't happy. But when I took the center resonator out I was satisfied. You can hear the turbos spooling a mile away.
caninefinest were you working with CP or NON-CP exhaust pipes? I've heard the CP pipes are basically hollowed out in the center.
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      01-20-2020, 12:56 PM   #18
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Quote:
Originally Posted by M6ORL View Post
ive been back and forward trying to do the downpipes for a while now but after seeing that m6 on the video on top im convince now this is what i need lol anywyas thank for the input man im going to try those...
M6ORL What's your current exhaust system? And which DP's are you looking at?

Might follow OG's Matt's set-up: AMS Catted with Dinan Axle back -- But agreed, that video has me questioning -- will it turn into a fart can/drone on highway/backfire?

I'm also debating between ATH or PSI doing the installation -- thoughts?
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      01-21-2020, 03:33 AM   #19
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NON-CP exhaust.


Quote:
Originally Posted by hirkaismyname View Post
caninefinest were you working with CP or NON-CP exhaust pipes? I've heard the CP pipes are basically hollowed out in the center.
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      01-21-2020, 07:34 PM   #20
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If you have any questions regarding exhausts for the m6 and are looking to purchase, I can help you out. we have many options! Contact ashkon@autotalent.com for more info.
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