QuickSilver cat delete

[Rjscharer]

Just installed Quicksilvers cat deletes in my 2020 Vantage. It does seem to be more responsive and the exhaust sound more robust.
I can’t find any information on the horsepower bump. While minimum, it would be nice to know the figure. Anyone informed on this?

[alscar]

When I had my V12S secondary cats replaced by QS’s I vaguely recall Works telling me it added 7-10 bhp but tbh I had it done purely for the noise.
It never felt more responsive in non S mode post.
But the noise…..

[bogie]

On the 4.7 Vantage they claim 16bhp. Hard to notice a few percent increase on a 420bhp 1600Kg car, although it did seem a bit more responsive, mostly it was about the improved sound

https://quicksilverexhausts.store/collections/asto...

[LordBretSinclair]

bogie said:

On the 4.7 Vantage they claim 16bhp. Hard to notice a few percent increase on a 420bhp 1600Kg car, although it did seem a bit more responsive, mostly it was about the improved sound

https://quicksilverexhausts.store/collections/asto...

I know we're all used to paying an "Aston Tax" but £912 for a couple of bits of pipe with a flange each end !!!!!!!
Thank goodness I went to my local exhaust specialist who made my V12 decat pipes for a 1/3 of that price.

[bogie]

LordBretSinclair said:

I know we're all used to paying an "Aston Tax" but £912 for a couple of bits of pipe with a flange each end !!!!!!!
Thank goodness I went to my local exhaust specialist who made my V12 decat pipes for a 1/3 of that price.

Yep...I know...the price seems to have doubled over the last 5 years.

When I bought those same QS parts for my 4.7 in 2015 they were £500 and 90 mins labour at my local garage

Must be inflation, as a sports back box was £1400 ish and now they are over £2k...still makes those cat delete pipes expensive

[Dewi 2]

During the first couple of years production of the 4.7, each pair of single cats contained two 'bricks'.
I think it was a continuation of the 4.3 exhaust system.
The simple decat mod is therefore to internally remove the 900 cell 'bricks', leaving the 400 cell 'bricks' in place.
Cannot remove both, because there would then not be any cats in the system.

Following that concept, instead of buying empty tubes for £912, why not just remove the original internals ?

From about 2010 onwards, legislation required primary cats in manifolds, so that is why you are able to talk about complete removal of the secondary cats.