F55/F56 Cooper S F56 dyno mode: success
@Rajapruk: will do, they may want to use the 200 CPSI unit if the CEL appears.
On the 125i, 328i and z4 28i it neved did.
No plans to test the catless downpipe at the moment. It'll probably need a ECU tune to work properly, but a sensor cheater may work as well.
A prototype will be built and tested, in-house or by some other tuners, probably PP-Performance as they already work on the F56. They got 245hp with just a tune so great espectations with a catless downpipe!
@fenderpicks: they still need to be defined, I think it'll take a few weeks to calculate the production costs, but I got an estimate for the US pricelist:
Rear muffler, ready to accept the QTP valve: $ 1.400
QTP valve with remote control: $ 200
100mm chrome tailpipes: $ 290
Centre pipe: $ 250
Downpipe with 100 CPSI cat: $ 1.800
Not cheap but considering the quality, the exclusive design characteristics (power gains, no CEL, same performance in loud and quiet mode, incredible sound in loud mode and no drone and high comfort in quiet mode), the fact they are handcrafted in Italy with european steel (not China or Taiwan) make it worth it.
There may also be a pre-order policy for the 1st production batch with higher discounts.
On the 125i, 328i and z4 28i it neved did.
No plans to test the catless downpipe at the moment. It'll probably need a ECU tune to work properly, but a sensor cheater may work as well.
A prototype will be built and tested, in-house or by some other tuners, probably PP-Performance as they already work on the F56. They got 245hp with just a tune so great espectations with a catless downpipe!
@fenderpicks: they still need to be defined, I think it'll take a few weeks to calculate the production costs, but I got an estimate for the US pricelist:
Rear muffler, ready to accept the QTP valve: $ 1.400
QTP valve with remote control: $ 200
100mm chrome tailpipes: $ 290
Centre pipe: $ 250
Downpipe with 100 CPSI cat: $ 1.800
Not cheap but considering the quality, the exclusive design characteristics (power gains, no CEL, same performance in loud and quiet mode, incredible sound in loud mode and no drone and high comfort in quiet mode), the fact they are handcrafted in Italy with european steel (not China or Taiwan) make it worth it.
There may also be a pre-order policy for the 1st production batch with higher discounts.
Oh crap.... Thats too expensive for my blood lol.
Would need to sell a kidney or 2 to get that.
I guess i will probably get the Remus lol
But nontheless GREAT PICS in this thread!!! Mouth watering goods indeed!!!!!!!!
Would need to sell a kidney or 2 to get that.
I guess i will probably get the Remus lol
But nontheless GREAT PICS in this thread!!! Mouth watering goods indeed!!!!!!!!
I gave a look at the Remus list price in Italy. In the US or elsewere it may be cheaper.
The muffler costs € 845 (vat included) including the wireless control.
The chrome tailpipes € 204 (vat included)
€ 1049 (with chrome tips) - > $ 1.300 is clearly cheaper than the SS at $ 1.890 but there are a few considerations to do:

1) The Remus has a much simpler design and the difference between the loud and quiet modes are inferior, at least for what I heard in the videos.
2) I suspect the Remus will drone once you fit a centre pipe, and even more with a downpipe, beacause of the shape of the silencer, mounted longitudinally.
3) The flow is restricted. I don't know what's the internal structure is but I guess that to keep it quiet they used a chamber design with smaller pipes in that small body.
I don't believe it's really 70mm, maybe the external pipe is.
I like the fact the SS has the same identical performance in both modes, with oversized Ø65mm pipes.
Considering this car has a potential for 250-300 hp 65mm is the perfect size.
No comment on the dyno charts published on their website. The car doesn't get any power even with a completely straight pipe from the cat on!
Anyway I'm told early adopters of the SS system will get a pre-order discount, so if you're interested, better send an email to them asking about it.
The muffler costs € 845 (vat included) including the wireless control.
The chrome tailpipes € 204 (vat included)
€ 1049 (with chrome tips) - > $ 1.300 is clearly cheaper than the SS at $ 1.890 but there are a few considerations to do:

1) The Remus has a much simpler design and the difference between the loud and quiet modes are inferior, at least for what I heard in the videos.
2) I suspect the Remus will drone once you fit a centre pipe, and even more with a downpipe, beacause of the shape of the silencer, mounted longitudinally.
3) The flow is restricted. I don't know what's the internal structure is but I guess that to keep it quiet they used a chamber design with smaller pipes in that small body.
I don't believe it's really 70mm, maybe the external pipe is.
I like the fact the SS has the same identical performance in both modes, with oversized Ø65mm pipes.
Considering this car has a potential for 250-300 hp 65mm is the perfect size.
No comment on the dyno charts published on their website. The car doesn't get any power even with a completely straight pipe from the cat on!
Anyway I'm told early adopters of the SS system will get a pre-order discount, so if you're interested, better send an email to them asking about it.
Earlier in the thread I asked if how to compute the unlock code was known....thought I had seen a thread on this subject. However, found the information on you tube. Haven't tried it yet....but, you add the last 5 of your vin to get the code.
What does the code unlock?
So I finally got the dyno results.
For non-german speaking people who is not familiar with the MAHA dyno software:
P-Mot (red) is crank horse power
M-Norm (orange) is crank torque
P-Rad (blue) is wheel horse power
P-Schlepp (gree) is power loss
p-saugrhor (purple) is turbo boost
T-ansaugluft (light blue) is intake air temperature
Lambda (dark purple) is A/F Ratio
Here's a re-post of the stock car.
207,3 hp and 322,2 nm.
About the torque: it's directly connected to the turbo boost at low rpm, as the peak torque is at less than 2000 rpm. Personally I think the whole power and torque curve is more interesting.

Full exhaust (turbo downpipe with 100 CPSI cat, centre piper, rear muffler with valve) in closed mode.
216,2 hp and 330,7 nm. While there is a slight loss at 3000 rpm, above 4000 the car is faster, especially at high revs.
Turbo has also a noticable faster spool up at low revs.

Vs stock:

Open mode, 217,5 hp, 312,7nm.
There is a loss in torque under 3500 rpm, but the car is definitely faster in the upper range.
The catback in this mode is basically a straight pipe so I guess there is a slight loss of boost at low rpm. I think it'll work extremely well once the ECU is tuned.

Vs stock:

Open vs Closed mode.
The difference is clear: open mode is good for high revs, closed mod for low revs.
In terms of performance the best solution would be an automatic mode that opens up the valve at 3500 rpm, plus the manual mode.
For non-german speaking people who is not familiar with the MAHA dyno software:
P-Mot (red) is crank horse power
M-Norm (orange) is crank torque
P-Rad (blue) is wheel horse power
P-Schlepp (gree) is power loss
p-saugrhor (purple) is turbo boost
T-ansaugluft (light blue) is intake air temperature
Lambda (dark purple) is A/F Ratio
Here's a re-post of the stock car.
207,3 hp and 322,2 nm.
About the torque: it's directly connected to the turbo boost at low rpm, as the peak torque is at less than 2000 rpm. Personally I think the whole power and torque curve is more interesting.

Full exhaust (turbo downpipe with 100 CPSI cat, centre piper, rear muffler with valve) in closed mode.
216,2 hp and 330,7 nm. While there is a slight loss at 3000 rpm, above 4000 the car is faster, especially at high revs.
Turbo has also a noticable faster spool up at low revs.

Vs stock:

Open mode, 217,5 hp, 312,7nm.
There is a loss in torque under 3500 rpm, but the car is definitely faster in the upper range.
The catback in this mode is basically a straight pipe so I guess there is a slight loss of boost at low rpm. I think it'll work extremely well once the ECU is tuned.

Vs stock:

Open vs Closed mode.
The difference is clear: open mode is good for high revs, closed mod for low revs.
In terms of performance the best solution would be an automatic mode that opens up the valve at 3500 rpm, plus the manual mode.
I still have to see a picture of the exhaust but I suspect it'll be similar to the Remus one, so limited flow in quiet mode and probably only one tip working.
Is the price confirmed, what will it include? ECU tune + exhaust?
I will most likeley go for the original JCW Tuning Kit, and then find a downpipe with that fits to this (if they give no CEL)
Last edited by Rajapruk; Nov 10, 2014 at 02:33 AM.
Nice thread - I have been following the F56 Exhaust developments with interest and on Wednesday I have the Remus exhaust being fitted to my car (with the optional non silenced centre pipe, which they call a 'racing tube')
I prefer the looks of the Remus system, but I was worried that maybe one of the tips won't be working in loud mode and the other won't be working in quiet mode - and you seem to suggest thats the case?
Remus claim +7.2hp / +12.1nm and -4.6kg - so not on a par with the SS system.
I prefer the looks of the Remus system, but I was worried that maybe one of the tips won't be working in loud mode and the other won't be working in quiet mode - and you seem to suggest thats the case?
Remus claim +7.2hp / +12.1nm and -4.6kg - so not on a par with the SS system.
Are you going to dyno the car before and after?
I'm pretty sure the car won't get even 1 hp unless you change the cat or tune the ECU.
I think the Remus discharges only from the right tip when in quiet mode, as the valve is on the left exit pipe.
In loud mode it'll discharge mostly from the left.
Let us know if it drones with the centre pipe.
I'm pretty sure the car won't get even 1 hp unless you change the cat or tune the ECU.
I think the Remus discharges only from the right tip when in quiet mode, as the valve is on the left exit pipe.
In loud mode it'll discharge mostly from the left.
Let us know if it drones with the centre pipe.
If you read the thread from the beginning, the OP listed how to get into the ECU for the dyne mode and there is a selection in there for "UNLOCK". I don't know what menus/options are available once you unlock; but, when I get time, I will find out.
Probably some testing of systems, and maybe some setting changes can be made. Will not know for sure until I see if the unlock computation actually works. Don't see why MINI would change how to compute it. I think it allows the mechanics to run tests.
Probably some testing of systems, and maybe some setting changes can be made. Will not know for sure until I see if the unlock computation actually works. Don't see why MINI would change how to compute it. I think it allows the mechanics to run tests.
Are you going to dyno the car before and after?
I'm pretty sure the car won't get even 1 hp unless you change the cat or tune the ECU.
I think the Remus discharges only from the right tip when in quiet mode, as the valve is on the left exit pipe.
In loud mode it'll discharge mostly from the left.
Let us know if it drones with the centre pipe.
I'm pretty sure the car won't get even 1 hp unless you change the cat or tune the ECU.
I think the Remus discharges only from the right tip when in quiet mode, as the valve is on the left exit pipe.
In loud mode it'll discharge mostly from the left.
Let us know if it drones with the centre pipe.
I guess Remus must have tested it on a dyno though to make those power claims??
Why do you think it will drone? Because of how small the rear box is?
I'm basing my previsions on the power based on the tests done by SS.
They tried a Ø65mm straight pipe from the cat on and the power was basically identical to stock (206-207 hp). The power curve was a little different between the various runs but that's most due to the ECU adjusting parameters all the time.
Basically all the catback power claims on modern cars are fake.
To get some power, usually 5-10% of the total output but sometimes not even that, the downpipe / cat / headers must be changed.
You can get any kind of result on a dyno if you know how to do it
About the drone, I may be wrong. Usually longitudinally mounted muffler are more prone to drone, but I have to say the SS is not much drony even in open mode, with no silencer at all.
I haven't found a video of the Remus with the centre pipe.
In the mean time, here's a new video of the full system:
They tried a Ø65mm straight pipe from the cat on and the power was basically identical to stock (206-207 hp). The power curve was a little different between the various runs but that's most due to the ECU adjusting parameters all the time.
Basically all the catback power claims on modern cars are fake.
To get some power, usually 5-10% of the total output but sometimes not even that, the downpipe / cat / headers must be changed.
You can get any kind of result on a dyno if you know how to do it

About the drone, I may be wrong. Usually longitudinally mounted muffler are more prone to drone, but I have to say the SS is not much drony even in open mode, with no silencer at all.
I haven't found a video of the Remus with the centre pipe.
In the mean time, here's a new video of the full system:
Is SuperSprint also designing the factory JCW exhaust? From what I have heard it sounds to be the exact same set up. I was told recently that the new F56 JCW exhaust is going to come with a button on the key fob that will put it into straight pipe mode. Although the factory JCW exhaust is expected to be around USD $2100, but it will have carbon fibre tips.
I agree, anyone who believes an exhaust upgrade like this gives their car more horsepower waits up for Santa Claus on Christmas Eve. It's all about the noise. That thing sounds pretty good. I could do without all the pops though. Sounds kinda cheap, like some modded Ford Focus or something.


