Is adding downpipes to loud

[Gloves]

Hi just wanting advice about adding downpipes to a full Remus exhaust and having a Litchfield stage 3 ...

I’m booked in for a stage 2 with a Remus cat back but would like to try for around 550bhp so looking at adding the downpipes

Has anyone got this or is it to much

[Captain Carling]

I've been thinking about this too, but I've been told they stink bad with no cats on

[t5pilot]

It's LOUD for sure. In S & S+ anyway. Efficient mode's surprisingly tame & quiet (not normal quiet standards though).

There's no smell... The secondary cats take up the slack of the primary ones being removed. Still meets emission standards too. Remove the secondary cats though (for the reasons above) will leave you in a world of pain come MOT time...

[ojawed]

Definately louder than stock, more rasp.

But cannot noticed any smell and I've been running them for 7 months.

[Gloves]

Thanks for reply lads ... so I loose the 2nd cats with the cat back Remus don’t I .. which I’m exspecting to be around 525 ish bhp on a stage 2 just keep seeing everyone pushing 550 bhp this cars a money Pitt ...
just didn’t want to have the stage 2 and still want the downpipes after it

[JayJogia]

Originally Posted by t5pilot

It's LOUD for sure. In S & S+ anyway. Efficient mode's surprisingly tame & quiet (not normal quiet standards though).

There's no smell... The secondary cats take up the slack of the primary ones being removed. Still meets emission standards too. Remove the secondary cats though (for the reasons above) will leave you in a world of pain come MOT time...

t5pilot im looking to get Akra DP's on my M4 and keep the secondary stock cats - I have the MPE so no resonator either.. I was under the impression i'd be in trouble come MOT time with catless DP's?

[t5pilot]

Originally Posted by JayJogia

t5pilot im looking to get Akra DP's on my M4 and keep the secondary stock cats - I have the MPE so no resonator either.. I was under the impression i'd be in trouble come MOT time with catless DP's?

I'm reliably informed that the secondary cats will do the job to keep within current emissions standards.

[t5pilot]

Just out of genuine curiosity, why spend so much for Akra?
The MTC ones are made from premium stainless. A fraction of the cost.

I know etto, but they're all the same size, shape & fitting...

[Gloves]

Had a chat with the mtc guys so going on your recommendation going for the stage 3 see what I get on the Dyno swop them back come Mot time 😂

[t5pilot]

Originally Posted by Gloves

Had a chat with the mtc guys so going on your recommendation going for the stage 3 see what I get on the Dyno swop them back come Mot time

Nice one. But as above, shouldn't need changing for MOT

[JayJogia]

Originally Posted by t5pilot

Just out of genuine curiosity, why spend so much for Akra?
The MTC ones are made from premium stainless. A fraction of the cost.

I know etto, but they're all the same size, shape & fitting...

t5pilot Only reason I decided on the Akra is because they have a flex section as per the stock dp’s. Because I run the MPE I’m a little concerned that I may increase chances of it craking from engine movement if I don’t have the flex. I’m open to suggestions on this..