Options for making DB9.2 louder
Discussion
Good Evening All,
I have a DB9.2 (MY14) and while it sounds great, I can't help but think that V12 could be a little louder. I removed fuse 15 from the boot fuse box almost immediately after getting the car and while I think I can notice a slight difference, it certainly isn't significant.
From the research i've done, it seems the options are Fuse 15 -> Secondary Decat -> Primary Decat -> Replacement back box (quicksilver/larini/AM sports exhaust/others?)
For the secondary decat, there's no sensors so far as I can see though unsure of the impact on emissions for an MOT. What i've read suggests the car will be fine with straight pipes on the secondary? Whatever option I go for, I want something that's going to pass the emissions test requirements so i'm not switching parts out every year.
As an aside, i'm based in Wimbledon so if anyone nearby has changed up their exhaust i'd love to hear it
I have a DB9.2 (MY14) and while it sounds great, I can't help but think that V12 could be a little louder. I removed fuse 15 from the boot fuse box almost immediately after getting the car and while I think I can notice a slight difference, it certainly isn't significant.
From the research i've done, it seems the options are Fuse 15 -> Secondary Decat -> Primary Decat -> Replacement back box (quicksilver/larini/AM sports exhaust/others?)
For the secondary decat, there's no sensors so far as I can see though unsure of the impact on emissions for an MOT. What i've read suggests the car will be fine with straight pipes on the secondary? Whatever option I go for, I want something that's going to pass the emissions test requirements so i'm not switching parts out every year.
As an aside, i'm based in Wimbledon so if anyone nearby has changed up their exhaust i'd love to hear it
Hi. I have the same car. I went for the BR primary decat and remap. Sounds great to me now, was a little subdued before. Not as raucous as a v12 vantage on startup but still great.without being too loud, plus more power. Unfortunately I am in York but I can make and send you some video if you want?
My experience of the DB9.2 and exhaust enhancements.
Initially had the secondary decat and valves always open. This was a pleasant noise but just not quite enough for me. Then went down the route of B.R primary decat as Soofsayer kindly demonstrated to me. The secondary cats were refitted and this stepped things up a notch again. I now get some crackles and pops when coldish. However I'm still not where I really want to be. I would prefer it to be a bit louder still but with a deeper and more baritone sound, not sure if this can even be done. My fear is changing the backbox would just make it obnoxiosly loud, which is not what I want.
Initially had the secondary decat and valves always open. This was a pleasant noise but just not quite enough for me. Then went down the route of B.R primary decat as Soofsayer kindly demonstrated to me. The secondary cats were refitted and this stepped things up a notch again. I now get some crackles and pops when coldish. However I'm still not where I really want to be. I would prefer it to be a bit louder still but with a deeper and more baritone sound, not sure if this can even be done. My fear is changing the backbox would just make it obnoxiosly loud, which is not what I want.
Is the DB9.2 setup much different from the DB9.1?
I only ask that as, having removed fuse 22 on my MY2006, I can’t imagine anyone wanting it much louder - to me it is great blend of wonderful start-up noise, relatively quiet, non-droning cruising (whilst still being able to tell there’s something serious under the bonnet) and hard-edged V12 soundtrack when driving more enthusiastically.
Presumably DB9.2 has some extra pipework or cats?
I only ask that as, having removed fuse 22 on my MY2006, I can’t imagine anyone wanting it much louder - to me it is great blend of wonderful start-up noise, relatively quiet, non-droning cruising (whilst still being able to tell there’s something serious under the bonnet) and hard-edged V12 soundtrack when driving more enthusiastically.
Presumably DB9.2 has some extra pipework or cats?
soofsayer said:
Hi. I have the same car. I went for the BR primary decat and remap. Sounds great to me now, was a little subdued before. Not as raucous as a v12 vantage on startup but still great.without being too loud, plus more power. Unfortunately I am in York but I can make and send you some video if you want?
Some video would be awesome - thanks 
I did this a little earlier as I was about to put the car in the garage after a wash. I was going to try and do some drive by stuff so you can hear the crackle and pops on engine breaking but the weather and my daughter are not interested at the moment.
https://youtu.be/HJ9280GUChg
I used my iPhone. No idea why the sound cuts a couple of times. Hadn’t listened to the car from outside before so well impressed lol.
The engine was already warm so I would expect it to be a bit louder on startup from cold.
With the BR decat they fit a toggle switch so you can have the back box in normal (as per factory) , loud (open flaps) or quiet (closed). This was filmed with loud (always in loud setting) and with sport mode on, and up to around 4.5k rpm.
https://youtu.be/HJ9280GUChg
I used my iPhone. No idea why the sound cuts a couple of times. Hadn’t listened to the car from outside before so well impressed lol.
The engine was already warm so I would expect it to be a bit louder on startup from cold.
With the BR decat they fit a toggle switch so you can have the back box in normal (as per factory) , loud (open flaps) or quiet (closed). This was filmed with loud (always in loud setting) and with sport mode on, and up to around 4.5k rpm.
Edited by anonymous-user on Friday 9th August 15:48
soofsayer said:
I did this a little earlier as I was about to put the car in the garage after a wash. I was going to try and do some drive by stuff so you can hear the crackle and pops on engine breaking but the weather and my daughter are not interested at the moment.
https://youtu.be/HJ9280GUChg
With the BR decat they fit a toggle switch so you can have the back box in normal (as per factory) , loud (open flaps) or quiet (closed). This was filmed with loud (always in loud setting) and with sport mode on, and up to around 4.5k rpm.
Where does the toggle switch go? Presume it's rather discreet. https://youtu.be/HJ9280GUChg
With the BR decat they fit a toggle switch so you can have the back box in normal (as per factory) , loud (open flaps) or quiet (closed). This was filmed with loud (always in loud setting) and with sport mode on, and up to around 4.5k rpm.
Edited by soofsayer on Friday 9th August 15:48
Is your car significantly louder than stock? Sadly it's always rather hard to tell from video recordings as it depends upon the volume of one's own speakers
magycks said:
Where does the toggle switch go? Presume it's rather discreet.
Is your car significantly louder than stock? Sadly it's always rather hard to tell from video recordings as it depends upon the volume of one's own speakers
The toggle switch is indeed discreet. It has been placed above the drivers footwell between the centre console trim and the carpet. You would never know it’s there unless you were told.Is your car significantly louder than stock? Sadly it's always rather hard to tell from video recordings as it depends upon the volume of one's own speakers
‘Significantly’ is subjective. It is louder than stock due to the cats being removed. The tone is much better too.
The reason I had the primaries removed wasnt for more noise and power (but those factors certainly helped the decision
), it was to negate the cat ingestion potential issue and give me piece of mind.I have played around with lots of configurations and have settled on the following:
BR headers, removing the primary cats.
In place of each secondary cat, BR made a short muffler box. These replaced the straight through pipe origionally fitted to replace the cats but really it was too raw with a straight through pipe!
Then BR made me an x-pipe centre section before a standard DBS back-box. This was a revelation to the sound. Personally, I think its much richer but others have said its loses a bit of the 'Aston' note. I believe, the DB11 has an x-pipe as standard and most agree that sounds like an Aston!
I'm in south Oxfordshire is you want to pop over. I can make a video with my phone but I'm not sure it does the sound justice.
Daniel
.
BR headers, removing the primary cats.
In place of each secondary cat, BR made a short muffler box. These replaced the straight through pipe origionally fitted to replace the cats but really it was too raw with a straight through pipe!
Then BR made me an x-pipe centre section before a standard DBS back-box. This was a revelation to the sound. Personally, I think its much richer but others have said its loses a bit of the 'Aston' note. I believe, the DB11 has an x-pipe as standard and most agree that sounds like an Aston!
I'm in south Oxfordshire is you want to pop over. I can make a video with my phone but I'm not sure it does the sound justice.
Daniel
.
danieldenham said:
I have played around with lots of configurations and have settled on the following:
BR headers, removing the primary cats.
In place of each secondary cat, BR made a short muffler box. These replaced the straight through pipe origionally fitted to replace the cats but really it was too raw with a straight through pipe!
Then BR made me an x-pipe centre section before a standard DBS back-box. This was a revelation to the sound. Personally, I think its much richer but others have said its loses a bit of the 'Aston' note. I believe, the DB11 has an x-pipe as standard and most agree that sounds like an Aston!
I'm in south Oxfordshire is you want to pop over. I can make a video with my phone but I'm not sure it does the sound justice.
Daniel
.
Interesting; what are your thoughts on the DBS back box? Do they fit all DB9s inc mine which is a MY14?BR headers, removing the primary cats.
In place of each secondary cat, BR made a short muffler box. These replaced the straight through pipe origionally fitted to replace the cats but really it was too raw with a straight through pipe!
Then BR made me an x-pipe centre section before a standard DBS back-box. This was a revelation to the sound. Personally, I think its much richer but others have said its loses a bit of the 'Aston' note. I believe, the DB11 has an x-pipe as standard and most agree that sounds like an Aston!
I'm in south Oxfordshire is you want to pop over. I can make a video with my phone but I'm not sure it does the sound justice.
Daniel
.
magycks said:
Interesting; what are your thoughts on the DBS back box? Do they fit all DB9s inc mine which is a MY14?
Yes DBS back box will fit but I would spend the money on the pipework. 2nd hand DBS box will be £1k+. For that, you can get secondary decats and x-pipe which will be much better use of £.
danieldenham said:
magycks said:
Interesting; what are your thoughts on the DBS back box? Do they fit all DB9s inc mine which is a MY14?
Yes DBS back box will fit but I would spend the money on the pipework. 2nd hand DBS box will be £1k+. For that, you can get secondary decats and x-pipe which will be much better use of £.
danieldenham said:
Audio (cold start!):
https://www.dropbox.com/s/zap0g3ahqpkhnzp/exhaust....
always hard for recordings to do an exhaust note justice, but i can see what you mean about losing a bit of that Aston sound. Sounds to be higher pitched than my stock DB9's grunt to my ears?https://www.dropbox.com/s/zap0g3ahqpkhnzp/exhaust....
Edited by magycks on Monday 19th August 10:31
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