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      07-12-2020, 05:54 PM   #1
patchesj
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m6 exhaust snap crackle pop?? where is it?

So I was able to put quite a few miles on a new to me 2013 M6 this weekend, including 155 miles of the Blue Ridge Parkway and Tail of the Dragon.... I'm curious if there is something different with the tune or exhaust on the M6 vs M5 as the M5's I've driven and heard always had a much more vocal off throttle pots and pans rattle. The M6 didn't pop once. Maybe I just wasn't winding it out enough, but even S3 downshifts > 5k had nothing... And yes, Sport + mode across the board. Don't get me wrong, super happy with the sound from factory exhaust but this seems like it must be more of a tuning thing? Decell fuel mixture? Am I crazy?

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      07-12-2020, 07:44 PM   #2
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You will need a tune to achieve what you are after -- Bootmod3 / BM3 tunes allow you to configure the amount of burble/crackle which is nice. I believe there is three settings, Off--Mild--Aggressive. I haven't gone to BM3 yet but plan to in the next month or so and add the mild option.
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      07-12-2020, 07:48 PM   #3
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Quote:
Originally Posted by LJohnson32 View Post
You will need a tune to achieve what you are after -- Bootmod3 / BM3 tunes allow you to configure the amount of burble/crackle which is nice. I believe there is three settings, Off--Mild--Aggressive. I haven't gone to BM3 yet but plan to in the next month or so and add the mild option.
I knew there was this option in BM3, but I thought there was at least a "mild mild" crackle on the stock M5s I've heard? Maybe they are all secretly running a BM3 tune.
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      07-12-2020, 07:53 PM   #4
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Quote:
Originally Posted by patchesj View Post
I knew there was this option in BM3, but I thought there was at least a "mild mild" crackle on the stock M5s I've heard? Maybe they are all secretly running a BM3 tune.
The new F90 M5 does have this characteristic built in from factory, but to my knowledge the F10 M5 does not. The S63TU power units between the F10 M5 and the F12/F13/F06 M6 are exactly the same, including the DME/ECU which would control this sort of thing.

I guess it depends on your definition of 'mild mild' crackle — I have the competition package mufflers on my car with the valves held open by hose clamps, and I notice a very slight, muffled burble when downshifting at low RPM's (for example: manual downshift in 2nd @1,200rpm to 1st in a parking lot with the windows down where the wind noise wouldn't drown it out, that's how subtle it is)
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      07-13-2020, 06:50 AM   #5
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I don't think Bootmod3 has adjustable burbles for the N63TU and S63TU platforms. Installing downpipes and opening the stock valves on the mufflers will make a huge difference in burbles.
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      07-13-2020, 07:46 PM   #6
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Quote:
Originally Posted by itzjoker View Post
I don't think Bootmod3 has adjustable burbles for the N63TU and S63TU platforms. Installing downpipes and opening the stock valves on the mufflers will make a huge difference in burbles.
Yes it does the burbles are fully adjustable in Bootmod3 ,my friend has it on his M6,it gets very annoying after awhile he removed it ,I like just a little pop here and there with a little flutter off throttle
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      07-14-2020, 07:10 AM   #7
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Quote:
Originally Posted by Whipple View Post
Yes it does the burbles are fully adjustable in Bootmod3 ,my friend has it on his M6,it gets very annoying after awhile he removed it ,I like just a little pop here and there with a little flutter off throttle
bm3 user manual and update logs show no adjustable burble feature for N63TU and S63TU and states that it's not available. I do know they have mild and aggressive burble maps. You'd have to purchase the map pack for an extra $150 to be able to "adjust" the burble through switching maps.
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      07-16-2020, 09:38 AM   #8
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It's not adjustable as such but there are 3 different maps you can flash the car with between none, mild and aggressive. It's not like the M3/M4 where you can use a slider to adjust it to exactly what you want.
On my M6 I find mild is too mild and aggressive is too aggressive which is annoying.
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      07-16-2020, 10:06 AM   #9
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The excessive pops is annoying as those fart can mufflers back in the day
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      07-20-2020, 03:10 AM   #10
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Yeah that's how I feel about the aggressive version it's just way too loud and goes on continuously above 3k rpm. I'd like it about 1/2 the volume and only a few crackles after letting off the accelerator.
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      07-20-2020, 05:45 AM   #11
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get the OTS mild burble map, the best
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      07-20-2020, 10:08 AM   #12
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Quote:
Originally Posted by Mr. M6 View Post
get the OTS mild burble map, the best
I've tried that one but find it produces almost no burble at all.
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      07-21-2020, 04:21 AM   #13
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Quote:
Originally Posted by Airz View Post
I've tried that one but find it produces almost no burble at all.
you need catless dp and the sound will be good
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      07-26-2020, 04:14 AM   #14
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Quote:
Originally Posted by Airz View Post
I've tried that one but find it produces almost no burble at all.
stage 2 AGG with catless downpipe is amazing, pops like crazy

cant wait till i pair it with the my new exhaust
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