[mike@x-ph.com]

For Christmas, we got a new exhaust system for our BMW M2 Competition. Specifically, the Slip-On Titanium Prototype Exhaust from Akrapovič.

In December, we visited the area around Nice and Monaco to meet our good friend Paul Wallace from Supercars of London. Of course, we used this opportunity to shoot a new #RaceChipInsights episode and show you the sound of the exhaust in a breathtaking landscape.

[FSU_Logan]

I want to like it, I just can't

[cecaa850]

Sounds like a 4 banger.

[vale007]

sounds slow for me, i‘m not a fan of it.. do they offer downpipes for european cars meanwhile? soundwise i really regret selling my bmw 1m coupe for the m2comp

[jasonF30]

cool video, i like the sound but a bit too much "epic symphony" background music

[MR.]

Originally Posted by vale007

sounds slow for me, i‘m not a fan of it.. do they offer downpipes for european cars meanwhile? soundwise i really regret selling my bmw 1m coupe for the m2comp

You can fit downpipes, but it would be the stupidest thing to do if you keep the OPFs on the car.

Go from the rear to the front, first slip-on then linkpipe then downpipes. Don't alter that, else it is pretty a waste of money what you do, and it could get you into serious problems when you put too much strain on the OPFs.

And yeah this is how a slip-on sounds on a OPF car. Not much you can do about it. It is like standing on your garden hose when you want a better nozzle to spray the plants. Taking your foot off the hose is better solution than replacing the nozzle.

MR

[vale007]

Originally Posted by MR.

You can fit downpipes, but it would be the stupidest thing to do if you keep the OPFs on the car.

Go from the rear to the front, first slip-on then linkpipe then downpipes. Don't alter that, else it is pretty a waste of money what you do, and it could get you into serious problems when you put too much strain on the OPFs.

And yeah this is how a slip-on sounds on a OPF car. Not much you can do about it. It is like standing on your garden hose when you want a better nozzle to spray the plants. Taking your foot off the hose is better solution than replacing the nozzle.

MR

i‘m thinking about two options;
1) full turbo back exhaust with secondary cat in the mids, maybe it need to be resonated also

@2) downpipes and us version of exhaust with secondary cat only

the 2nd solution was installed at my bmw 1M coupe with akrapovic downpipes only, it was exactly 300kW/600Nm with ecu flash. nice sound, and... there was no issue with the police, it was not possible but IMO not necessary to put that „upgrade“ in the car documents.

@1) it is only possible to get opf back exhaust straight to car documents in EU, correct? so i‘m afraid to lose my numberplates if I go for mids or full exhaust after signing the axle back only in the documents if I got by the police for noise issues..

the supersprint exhaust is with small opf backpressure dedection link pipes, may i ask you guys if it is possible to measure the backpressure of the sec.cats of us midpipe generates with a proper tuning software or is there no need and akrapovic downpipes without sensor hoses ar better?

(i‘ve got a non resonated cat back system already at my garage, it was a set without sec.cats/resonators)

let me know what you think, thanks in advance!

[mhanism]

The video clip is of an M2 with the OPF I presume or full cat back system.

Any chance you have a clip of a US non-OPF axleback only?

Thanks!

[warrenw]

I'm also really curious to know if anyone in the US has installed the slip on... I think the sound will be dramatically different......

[MR.]

Originally Posted by mhanism

The video clip is of an M2 with the OPF I presume or full cat back system.

Any chance you have a clip of a US non-OPF axleback only?

Thanks!

Originally Posted by warrenw

I'm also really curious to know if anyone in the US has installed the slip on... I think the sound will be dramatically different......

I have not seen any yet...

MR