Resonator Delete + Muffler Delete

[LandonLiftz]

So I have been waying my options for my exhaust on my new f82 M4 I previousley had a g20 330i with a muffler delete and res delete and was pleased with results for a 4 cyl.
With that being said for now here are some questions I would love some help wth I attached a picture of the exhaust with parts to show what I want to delete

1: Would it make a big enough diffrence to replace the stock muffler with straight pipe?

2: Is deleting part 7,8, and 9 legal i get emissions tested + the shop i go too wont do anything illegal/non Compliant such as catless downpipe

3.Does anyone have any videos/sound clips of

the above done to there m4?

[LandonLiftz]

After further research I guess what im looking for is a secondary cat delete + resonator delete any thoughts or opinions would be appreciated!

[Sephrr]

The secondaries are not monitored. So should be fine. That diagram is also for the new M3/4 since it's the S58 and not S55.
mike@x-ph.com on midpipes

[b_w.]

Just get a single mid pipe which deletes the resonator and secondary cats.

[mike@x-ph.com]

Originally Posted by LandonLiftz

So I have been waying my options for my exhaust on my new f82 M4 I previousley had a g20 330i with a muffler delete and res delete and was pleased with results for a 4 cyl.
With that being said for now here are some questions I would love some help wth I attached a picture of the exhaust with parts to show what I want to delete

1: Would it make a big enough diffrence to replace the stock muffler with straight pipe?

2: Is deleting part 7,8, and 9 legal i get emissions tested + the shop i go too wont do anything illegal/non Compliant such as catless downpipe

1- it makes a big difference but not in a good way. Its loud with any deepness to the sound and also very raspy.

2- it depends on your state

[DomsF80]

did you end up getting the secondary cat+res delete?

[dylanwilson]

Just get a single mid pipe and keep stock muffler. Sounds deep

[LandonLiftz]

Originally Posted by DomsF80

did you end up getting the secondary cat+res delete?

Getting it done friday will post update

[DomsF80]

Originally Posted by LandonLiftz

Getting it done friday will post update

okay bet getting mine done tomorrow will see how it sounds

[LandonLiftz]

Hey dom i got mine done a day early so I instead got a secondary cat delete and a resonator delete I am making a post about this right now, but i suggest removing your muffler or something of the sorts past 2nd gear you will not hear your exhaust at all as the valves close in 3rd gear no matter what sport mode your in and you cannot hear the exhaust at all. but in 1st and 2nd gear it sounds amazing until those valves close sadly i learned the hard way