V12V secondary cat delete pipes

[kbooker]

I know this is a topic that's been covered before, however I'm keen to hear some current opinions.

I'm after more noise but want to keep the lovely V12 tone, very keen to avoid a booming drone.

I've got the gadget that allows remote opening/closing of the exhaust valves, it's very handy but doesn't deliver the db levels I'm after.

So, what options are out there? Will I encounter engine management light problems? Even though this change is about sound enhancement do they provide a slight performance gain?

Thanks in advance guys....

[jonby]

kbooker said:

I know this is a topic that's been covered before, however I'm keen to hear some current opinions.

I'm after more noise but want to keep the lovely V12 tone, very keen to avoid a booming drone.

I've got the gadget that allows remote opening/closing of the exhaust valves, it's very handy but doesn't deliver the db levels I'm after.

So, what options are out there? Will I encounter engine management light problems? Even though this change is about sound enhancement do they provide a slight performance gain?

Thanks in advance guys....

slight performance gain, slight weight saving, big volume increase. Plus of course you retain the option of flaps being partially closed

engine management is linked to the primary cats in the headers, so nothing triggered. I've done over 20,000 miles since having mine done, no issues

[bogie]

Ive done the secondary cats on my V8 and it now sounds how it should, just the right amount of dB lift and growl, still keeping the option of remote on the fuse if you wish to sneak out early in the mornings.

Go for it ..its relatively inexpensive for a pair of pipes and say 90 mins fitting at a local garage. Cost me £500 all in and easily reversible .

[kbooker]

jonby said:

slight performance gain, slight weight saving, big volume increase. Plus of course you retain the option of flaps being partially closed

engine management is linked to the primary cats in the headers, so nothing triggered. I've done over 20,000 miles since having mine done, no issues

Hi jonby, thanks for the reply, just the kind of info I was looking for, my I ask what brand do you have fitted...

[kbooker]

bogie said:

Ive done the secondary cats on my V8 and it now sounds how it should, just the right amount of dB lift and growl, still keeping the option of remote on the fuse if you wish to sneak out early in the mornings.

Go for it ..its relatively inexpensive for a pair of pipes and say 90 mins fitting at a local garage. Cost me £500 all in and easily reversible .

Thanks bogie, sounds like they'll be just what I'm looking for

[SAG6Y]

I've had my secondary cats deleted and though it sounded better, still was a little quiet for my liking. I then had the primary cats deleted by Bamford Rose and it now sounds stunning! A worthwhile exhaust mod.

[kbooker]

SAG6Y said:

I've had my secondary cats deleted and though it sounded better, still was a little quiet for my liking. I then had the primary cats deleted by Bamford Rose and it now sounds stunning! A worthwhile exhaust mod.

Hello SAG6Y, so there's a way around engine management warning light issues with the primary cats removed? did that involve alterations to software?
Come MOT time do they have to be refitted?

I've had years of modding/tuning other brands so ideally I just want a simple solution

[divetheworld]

SAG6Y said:

I've had my secondary cats deleted and though it sounded better, still was a little quiet for my liking. I then had the primary cats deleted by Bamford Rose and it now sounds stunning! A worthwhile exhaust mod.

Primary and secondary delete too quiet?
Are you insane!?!?

[kbooker]

divetheworld said:

SAG6Y said:

I've had my secondary cats deleted and though it sounded better, still was a little quiet for my liking. I then had the primary cats deleted by Bamford Rose and it now sounds stunning! A worthwhile exhaust mod.

Primary and secondary delete too quiet?
Are you insane!?!?

or deaf, or as a consequence gone deaf?

[alscar]

So, what options are out there? Will I encounter engine management light problems? Even though this change is about sound enhancement do they provide a slight performance gain?

I had the secondary cats deleted on my V12S and replaced with Quicksilver pipes - no emission or warning lights whatsover and also had a steering column on/ off switch fitted.Can drone a bit on motorway runs so turn them off.Otherwise great noise and very happy I had done.

[IanV12VR]

I have just had it done on my V12VSR and the sound is fabulous. Gaydon have just produced their own product which I used and not that expensive.

I wasn't that concerned with performance gains just wanted more noise and have definitely achieved that. Only done a couple of short runs but can imagine on a longer trek it may annoy. Have one of Clive's switches so can close the valves if needed. Off for a good run around Cornwall next weekend!!!!!!!!!

[bogie]

I have the larini cat pipes - £400 ish for either engine....

https://www.larinisystems.com/collection/aston-mar...

[BigScotty]

I've had a set of secondary cat delete pipes installed on my V12V for a while now, they sound great!

About to sell them, if anyone is interested.

[divetheworld]

kbooker said:

divetheworld said:

SAG6Y said:

I've had my secondary cats deleted and though it sounded better, still was a little quiet for my liking. I then had the primary cats deleted by Bamford Rose and it now sounds stunning! A worthwhile exhaust mod.

Primary and secondary delete too quiet?
Are you insane!?!?

or deaf, or as a consequence gone deaf?

You know those airshows where people get awfully excited when a cool jet does a performance takeoff?
This is that guy that never gets bored of it and shouts "Again!" over and over.

[jonby]

kbooker said:

jonby said:

slight performance gain, slight weight saving, big volume increase. Plus of course you retain the option of flaps being partially closed

engine management is linked to the primary cats in the headers, so nothing triggered. I've done over 20,000 miles since having mine done, no issues

Hi jonby, thanks for the reply, just the kind of info I was looking for, my I ask what brand do you have fitted...

I have capristo which were from memory v approx £300 but I imagine there will be very little difference from one brand to the next. A few hours labour to fit as the rear bumper possibly has to come off - I had my dealer do mine

kbooker said:

SAG6Y said:

I've had my secondary cats deleted and though it sounded better, still was a little quiet for my liking. I then had the primary cats deleted by Bamford Rose and it now sounds stunning! A worthwhile exhaust mod.

Hello SAG6Y, so there's a way around engine management warning light issues with the primary cats removed? did that involve alterations to software?

I may be wrong but I think you'll find that when BR fit new headers which are completely stripped of cats, they put in at the very least some racing style cats in place of the rears, so there are some cats somewhere. They then move the sensors to them so that there are no warning lights

Have seen many ppl on here comment on that system and none mention issues with engine management lights and there certainly doesn't appear to be an MOT issue

However whether talking about the BR system or the new Aston system, the rear cats are the cheapest element and give the most bang for the buck, whereas the other elements, however well engineered (which they are), from a noise perspective alone, cost a lot of money for relatively little compared to the rear cat delete option. Again, I'm just talking from a noise perspective

We are talking about comparing less than £1k including fitting to a good number of thousands

One thing I'm not sure about and interested if others know, is that in the latest 600ps guise, the V12 powertrain in Vanquish S, Vanquish Zagato, GT12 and V12VS with performance pack are stated as having rear cat deletes, but I'm not sure if that literally means straight through pipes instead (which I have), or slightly damped pipes, or racing cats

[kbooker]

Thanks for the replies and help gent's

The car is off to Bridge Mill soon for a service and MOT so while they have it they are going to fit me a pair, I'll report back how I'm getting on ...

[bentley01]

Not sure where you are based but I am in Lancashire if you want to listen to my car with the quicksilver secondary decat pipe on.

[speedracer800]

kbooker said:

I know this is a topic that's been covered before, however I'm keen to hear some current opinions.

I'm after more noise but want to keep the lovely V12 tone, very keen to avoid a booming drone.

I've got the gadget that allows remote opening/closing of the exhaust valves, it's very handy but doesn't deliver the db levels I'm after.

So, what options are out there? Will I encounter engine management light problems? Even though this change is about sound enhancement do they provide a slight performance gain?

Thanks in advance guys....

I'd recommend the Fabspeed Xpipe secondary cat delete pipes. I've tried every possible combination of high flow cats, straight pipes and several different back boxes on both my DB9 and my DBS and the Xpipe is by far the best bang for your buck. It actually quiets down the car so much I've run with muffler delete pipes in the past after installing the Xpipe. I'm now using the Xpipe with a Tubi back box and it sounds pretty good. Plus much better/improved throttle response with the Xpipe and the removal of the factory secondary cats.

If you're interested I can post a link to my YouTube videos which I created using several different configurations on both my cars.

Definitely getting the secondary cats off your car is the right idea.. And you're correct in the concern of massive drone etc with straight pipes so I would highly recommend staying away from the straight pipes..just ones man's opinion.

[kbooker]

Just to update this thread,

The car went to Bridge Mill for it's service (the experience with the team at Bridge Mill was a very very good one, while the car was with them we had a bit of family emergency, they were absolutely fantastic with me and very understanding, special thanks to Mark for his compassion and patience . Also thanks to all you guys on here who pointed me in their direction, one very satisfied new customer, I highly recommended them)

While it was there Bridge Mill fitted a pair of secondary cat delete pipes, the sound is exactly the right amount I was looking for with the added bonus of a few crackles and pops on the over-run, the rich V12 tone is still there but just lots more of it....perfect

Best

Kevin

[steveway]

kbooker said:

Just to update this thread,

The car went to Bridge Mill for it's service (the experience with the team at Bridge Mill was a very very good one, while the car was with them we had a bit of family emergency, they were absolutely fantastic with me and very understanding, special thanks to Mark for his compassion and patience . Also thanks to all you guys on here who pointed me in their direction, one very satisfied new customer, I highly recommended them)

While it was there Bridge Mill fitted a pair of secondary cat delete pipes, the sound is exactly the right amount I was looking for with the added bonus of a few crackles and pops on the over-run, the rich V12 tone is still there but just lots more of it....perfect

Best

Kevin

Kevin, with the secondary cat delete pipes installed will this pass MOT? what make did you go for

steve