Still questions about 200 cell catalysts

[Buzzi77]

Hello, I bought the 200 cell catalytic converters for aston Martin Vantage V8 of 2006 4.3 . I mounted them and I must say that the noise is very nice, maybe a little too much for me in the city.
Now I kindly ask you:
1.)
If I buy the Velocity ap ecu modification from DAE, does the noise stabilize and become less loud?
2.)
Do you think that by refitting the fuse 22 I could travel around the city in a more discreet way.?

Thank you for your kind feedback.
🙏🙏🙏
Ale

[DB9S Paul]

I don't see how a tune will make it less noisy

By refitting fuse 22 it will become quieter between 1500 and 3500rpm (although I understand that the second rpm value can be changed with a remap)

To make it quieter when you choose, you need to fit a 3 way exhaust valve switch.

[Dewi 2]

Why did you not simply have your existing cats adapted, to make them 400 cell, together with a 3 way switch?
It is the modest cost solution for your period car and you would not have needed to ask your present question.

[XMark]

I don’t think mine are loud enough lol Refitting the fuse will help for ‘normal’ driving and as said an exhaust controller (CCCharger) would give you total control, open and close from a remote.

[Dewi 2]

XMark said:

I don't think mine are loud enough lol. Refitting the fuse will help for normal driving and as said, an exhaust controller (CCCharger) would give you total control, open and close from a remote.

Please explain how the remote exhaust valve controller can keep the exhaust valves closed all the time.
Mine cannot do that.

[Buzzi77]

DB9S Paul said:

I don't see how a tune will make it less noisy

By refitting fuse 22 it will become quieter between 1500 and 3500rpm (although I understand that the second rpm value can be changed with a remap)

To make it quieter when you choose, you need to fit a 3 way exhaust valve switch.

I did exactly that! Now I'm super satisfied, there's no more metal barking, now 2,500 laps in the city with Fuse 22, then I'm unleashing hell beyond.
What impresses me is with the closed tubes how the noise is as nice as the original but better
Happy

[XMark]

Dewi 2 said:

Please explain how the remote exhaust valve controller can keep the exhaust valves closed all the time.
Mine cannot do that.

Mine does, I bought the one that has valves always opened default and can press the button to close it at any time, not that I ever do now

Edited by XMark on Saturday 20th December 14:48

[NickXX]

As above, will be nice and quiet with the valves closed.

[Buzzi77]

I wanted to close the discussion with my own experience.
Aston Martin Vantage V8 with 200 cells, perfect noise but also a lot Metallic. On the motorway too strong
Mounted CCcharger With the valves closed on the silent highway
In the city I prefer to drive with open valves, being careful not to accelerate too much
Ultimately, the CCcharger is indispensable for the 200 cells
Now the aston when it goes around feels and you feel like your car has 500HP
.

[Sydney V8V]

I fitted VAP exhaust headers with 100 cell metal substrat cats and X pipe with still OEM rear mufflers and VAP tune. Idling and cruising its quiet but power through the revs it howls.-magic., Also economy is better and much more tractable than standard.