Performance exhaust & Intake

[Stumpy5980]

I’ve just bought a 2015 M5 and whilst it’s awesome it doesn’t sound like 560HP.
I’m considering adding a Cat Back Exhaust and an Intake... do I have to add a tune to avoid any potential issues? Or will it be fine just changing out the parts?

[ByronUT_M6]

No tune required for cat back and intake, I'm currently running those same mods on stock tune, no problems. Now if you do catless downpipes then you'll want to get a tune for sure.

[Stumpy5980]

Perfect thanks for the response, what exhaust and intake do you have?

[ByronUT_M6]

Originally Posted by Stumpy5980

Perfect thanks for the response, what exhaust and intake do you have?

Turner muffler delete and a carbon rk Autowerks intake, love the intake it really brings out the sounds of the turbos spooling

[M5 ita]

Originally Posted by ByronUT_M6

No tune required for cat back and intake, I'm currently running those same mods on stock tune, no problems. Now if you do catless downpipes then you'll want to get a tune for sure.

because leaving the catalysts there are no problems and without catalysts you have to make a safe map?

[KSA.m6]

Originally Posted by M5 ita

because leaving the catalysts there are no problems

yes

Originally Posted by M5 ita

and without catalysts you have to make a safe map?

not about a safe map, about telling the car that the difference in readings before and after the catalysts is not a fault.