Let me lighten the load!
Also It may be too much to ask but, I'd love to have a sound comparison (Revs and under load)between these two setups
-Rebellion Downpipe/Mipdipe +stock muffler
-Full Rebellion exhaust system
I had the same thing happen with my new X6M. I installed a full titanium Akrapovic from the cat back on the M. For a 7K system it didn't change the sound all that much, BUT when I did the downpipes the car ended up sounding like an exotic.
You got the turbo which muffles the sound and then you have the cat directly behind the turbo muffling the sound even more. AMG does a much better job at getting their cars to have a great stock sound, but once you open up that downpipe man does it ROAR!
I had the same thing happen with my new X6M. I installed a full titanium Akrapovic from the cat back on the M. For a 7K system it didn't change the sound all that much, BUT when I did the downpipes the car ended up sounding like an exotic.
You got the turbo which muffles the sound and then you have the cat directly behind the turbo muffling the sound even more. AMG does a much better job at getting their cars to have a great stock sound, but once you open up that downpipe man does it ROAR!

I am now considering a titanium catback only because it helps to save weight.
So think about what you are looking for before you modify your exhaust system.
I am now considering a titanium catback only because it helps to save weight.
So think about what you are looking for before you modify your exhaust system.
be mated to my Armytrix downpipe(catless or w/sport cat) and front pipe.
Of course now I am going to consider the Rebellion unit.
The Best of Mercedes & AMG
Did you still have a nice increase in sound with the race cat DP compared to the stock DP?
Sorry been a busy weekend for us.
Will get all weights and sound clips soon.
As we do all fabrication in house we can manufacture all Downpipes and Full exhausts is Titanium too if required.
Regards,
Matt
That's great. Could you please try to work out the cost of your exhaust(midpipe back or full exhaust including sportcat downpipe and frontpipe) in titanium?
Right Cost break down.
Down Pipe and Mid Pipe - £995 ($1499 approx) to add a Sports cat to this add £500 ($750)
Valvetronic Mid Pipe back (just behind the front wheels) is £1499 ($2200 Approx) - This includes Valves, Electrics and Remote.
If we were to build the Turbo Back system in titanium you would be looking at about $6000 - $7000.
Shipping is down to location etc.
Cheers
Your midpipe back in titanium would be 4000 to 4500 then? What would be the approximate lead time from order to delivery? I am definitely interested.
Last edited by ddtung; Jan 12, 2015 at 03:32 PM.

Normal systems are about 3-4 weeks away, A custom Ti System would be about 4 -5 Weeks.
Hope that helps
Appreciate the cost breakdown, and am glad to hear it is not $2200 for JUST the muffler section
. Just to confirm, the $2200 option, this is essentially the 'catback' version consisting of the midpipe and muffler with valves and electronics correct?Will you be offering piece for sale individually? For example if we only wanted the muffler, and was undecided whether we wanted the midpipe for example?
In your opinion, how much would the sound change or be enhanced with just your muffler? Or would it not be worth getting by itself for example?
Cheers,
Justin
Right Cost break down.
Down Pipe and Mid Pipe - £995 ($1499 approx) to add a Sports cat to this add £500 ($750)
Valvetronic Mid Pipe back (just behind the front wheels) is £1499 ($2200 Approx) - This includes Valves, Electrics and Remote.
If we were to build the Turbo Back system in titanium you would be looking at about $6000 - $7000.
Shipping is down to location etc.
Cheers
Appreciate the cost breakdown, and am glad to hear it is not $2200 for JUST the muffler section
. Just to confirm, the $2200 option, this is essentially the 'catback' version consisting of the midpipe and muffler with valves and electronics correct?Will you be offering piece for sale individually? For example if we only wanted the muffler, and was undecided whether we wanted the midpipe for example?
In your opinion, how much would the sound change or be enhanced with just your muffler? Or would it not be worth getting by itself for example?
Cheers,
Justin
Like I said before just changing the muffler wont do that much. I did the IPE cat back before the downpipe. It just make the sound slightly louder and slightly lower. The big sound difference comes in the downpipe
The $2200 Option is from just behind the front wheels and includes everything needed to fit to the car and have it operational.
We could do just the mufler however that would leave one silencer in the system so you wont get much volume increase.
I will do the sound files tomorrow and get them uploaded
This is the Downpipe/Midpipe
this is where the CAT Back starts


