[GTS_M8]

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Currently I’m running a secondary DP. The reason to not going to primary is the warranty. So now I need to increase the sound so the cheapest way is the primary DP.

If i install the primary and I have an issue with the car in the future then I install back the Orignal DPs and remove the CEL error. Is there a way that the dealer could know that i had catless DPs?

[Vic55]

Originally Posted by GTS_M8

Currently I’m running a secondary DP. The reason to not going to primary is the warranty. So now I need to increase the sound so the cheapest way is the primary DP.

If i install the primary and I have an issue with the car in the future then I install back the Orignal DPs and remove the CEL error. Is there a way that the dealer could know that i had catless DPs?

If they search they might but dp's dont change boost like a tune/piggy so its more about if they look underneath and notice a chop shop job....

So the install should be clean IMHO but even moreso the uninstall reinstall.

[GTS_M8]

So only by the look not by going back to historical error codes ?

[Vic55]

Originally Posted by GTS_M8

So only by the look not by going back to historical error codes ?

CEL's, exhaust related, tend to occur randomly so if they search and find that- there might not be any issues.

It seems like where you are, its very stringent and if thats the case I would not run the DP's unless you know your Service Advisor very well ALONG with his team.

[M8CompSoCal]

Following these threads. Like knowing I’m not the only one who thinks my M8C in Sport+ is too quiet. A few M3’s and M4’s in my neighborhood sound incredible.

[moonM8]

Akrapovic Exhaust and Secondary Cat Delete will fix all your problems

https://youtu.be/DCztwNALBp0

Made this video couple years ago with r33_RGSport

[Vic55]

Originally Posted by alksion

Following these threads. Like knowing I’m not the only one who thinks my M8C in Sport+ is too quiet. A few M3’s and M4’s in my neighborhood sound incredible.

You have a GC with a 10 inch longer exhaust than a coupe and almost 13 inches longer than a G8X. I have a fully modded G80 and while I love the exhaust immensely I do like the deep more rich sound of the V8 (barely LOL)... The exhaust length along with the better sound deadening in the 8 will get you that feeling.

My car:

[M8CompSoCal]

Originally Posted by Vic55

You have a GC with a 10 inch longer exhaust than a coupe and almost 13 inches longer than a G8X. I have a fully modded G80 and while I love the exhaust immensely I do like the deep more rich sound of the V8 (barely LOL)... The exhaust length along with the better sound deadening in the 8 will get you that feeling.

My car:

https://www.youtube.com/watch?v=-hbSAsAjIbk

Thanks for sharing. I think it sounds really good. I actually just have a regular coupe.

[Vic55]

Originally Posted by alksion

Thanks for sharing. I think it sounds really good. I actually just have a regular coupe.

but thats my M3 LOL

Ive sent you my M8 ones too.

[Info@mad-us.com]

Originally Posted by GTS_M8

Currently I’m running a secondary DP. The reason to not going to primary is the warranty. So now I need to increase the sound so the cheapest way is the primary DP.

If i install the primary and I have an issue with the car in the future then I install back the Orignal DPs and remove the CEL error. Is there a way that the dealer could know that i had catless DPs?

Very very unlikely.

[M8CompSoCal]

Originally Posted by Vic55

but thats my M3 LOL

Ive sent you my M8 ones too.

Yeah I know it was the M3. Still think it sounds good.

[Vic55]

Originally Posted by alksion

Yeah I know it was the M3. Still think it sounds good.

It does sound good but its still a higher pitch that needed a full setup vs our S63's which really just a res pull...

You have the same exhaust that a comp does but I think your center section might differ...

Ben is the comp and non comp like the M5?

r33_RGSport

[r33_RGSport]

Originally Posted by Vic55

It does sound good but its still a higher pitch that needed a full setup vs our S63's which really just a res pull...

You have the same exhaust that a comp does but I think your center section might differ...

Ben is the comp and non comp like the M5?

r33_RGSport

There are 2 different part numbers. But it just saying either M Sport exhaust system or non M Sport exhaust system.

[r33_RGSport]

Originally Posted by GTS_M8

Currently I’m running a secondary DP. The reason to not going to primary is the warranty. So now I need to increase the sound so the cheapest way is the primary DP.

If i install the primary and I have an issue with the car in the future then I install back the Orignal DPs and remove the CEL error. Is there a way that the dealer could know that i had catless DPs?

They may, just depending on the dealer how detail they want to dig into the car and finding out.