M5 Competition with OPFs and aftermarket exhaust ?

[HSimon]

Chaps,
Has anyone in the UK, with an M5 Competition, fitted with OPFs, changed their rear silencer yet ?. Ive not heard, or know of nobody that has actually done this yet, and im wanting to hear what the car sounds like, after fitting. My choices are, Remus, AC Schnitzer, Eisenmann, or a rear silencer delete from Awe. TIA

[mikeN54]

Not M5, but I've just ditched the OPFs on my M2C with a Milltek midpipe and rear silencer setup.

Bloody marvellous!

[HSimon]

mikeN54 said:

Not M5, but I've just ditched the OPFs on my M2C with a Milltek midpipe and rear silencer setup.

Bloody marvellous!

Mike,
How have you managed that, with a remap also ?. Its my understanding that if you do remove the OPFs, you will need a remap, therefore blowing the warranty ?.

[mikeN54]

I may get a CEL (yellow check light) but nothing as yet after 200 miles. It's like a 20 tog duvet has been removed from the exhaust!

OPFs are only monitored upstream for back pressure increase as they fill with soot they are not monitored for efficiency like CATs.

Yes a remap might give issues with engine failure type warranty claims but won't harm unrelated faults.

I gather akrapovic are working on a plug-in OPF delete box...

Edited by mikeN54 on Sunday 28th April 19:53

[HSimon]

mikeN54 said:

I may get a CEL (yellow check light) but nothing as yet after 200 miles.

OPFs are only monitored upstream for back pressure increase as they fill with soot they are not monitored for efficiency like CATs.

Yes a remap might give issues with engine failure type warranty claims but won't harm unrelated faults.

I gather akrapovic are working on a plug in OPF delete box...

Interesting Mike,
Ive been told that a CEL, and limp mode is on the cards if you just take out the OPFs without a remap to compensate. Its a bit of a mine field atm, and it seems to depend on who you talk to, to get a proper answer. Could you keep us informed of your progress with your car, on this subject ?, cheers buddy, regards, Simon.

[thatsprettyshady]

I have an M2 with OPF's and went for an Eisenmann rear section. It sounds divine.

https://youtu.be/he3tCtyUOtQ

then

https://youtu.be/lUhoigmHL_4

[HSimon]

thatsprettyshady said:

I have an M2 with OPF's and went for an Eisenmann rear section. It sounds divine.

https://youtu.be/he3tCtyUOtQ

then

https://youtu.be/lUhoigmHL_4

Yes, that does sound much better. So this is just a rear silencer change to an Eisenmann, and the OPFs are still in there ?. Are you from the North West, looking at your plate ?.

[thatsprettyshady]

HSimon said:

Yes, that does sound much better. So this is just a rear silencer change to an Eisenmann, and the OPFs are still in there ?. Are you from the North West, looking at your plate ?.

Just the rear silencer and no other mods. I’m actually in Devon, the car was a pre reg that was transported here from Cumbria.

[HSimon]

thatsprettyshady said:

Just the rear silencer and no other mods. I’m actually in Devon, the car was a pre reg that was transported here from Cumbria.

Thanks for posting the videos, this gives me great hope. Did you get the car from Lloyds South Lakes ?. Im very friendly with the Lloyds group, and i always use the Blackpool branch.

[thatsprettyshady]

HSimon said:

thatsprettyshady said:

Just the rear silencer and no other mods. I’m actually in Devon, the car was a pre reg that was transported here from Cumbria.

Thanks for posting the videos, this gives me great hope. Did you get the car from Lloyds South Lakes ?. Im very friendly with the Lloyds group, and i always use the Blackpool branch.

The car came from Lloyds Cockermouth, my local dealer here in Torbay got it down here for me. Car was perfect in every way... but it should be as it only had 29 miles on it!

Eisenmann really do great exhausts for our cars, contact Roy @ CA automotive/Eisenmann and I'm sure he will talk it all through.

[HSimon]

thatsprettyshady said:

The car came from Lloyds Cockermouth, my local dealer here in Torbay got it down here for me. Car was perfect in every way... but it should be as it only had 29 miles on it!

Eisenmann really do great exhausts for our cars, contact Roy @ CA automotive/Eisenmann and I'm sure he will talk it all through.