[Kid_droid]

I have tried to search on the phone but struggling to find the right info.

I have 428i with MPE exhaust fitted. I was wondering if deleting the Res would increase the sound a little?

Will it drone with just a simple res delete? Will I loss any performance? Not looking to gain. Just for sound.

I know downpipe can be another route, but catted downpipes are pricey and dealing with CEL and jb4 is not top of the priority list at the moment.

Please share videos you have if any?.

Thanks KD

[Gen13 F36]

It will be louder than just an mpe. Here is a link on youtube... you just have to search for morehttps://youtu.be/Z9YEYcv355k

[Kid_droid]

Originally Posted by Brain4good

I highly recommend doing a resonator delete and secondary cat delete to go along with your MPE. It's going to be a huge improvement, It pops a lot more and is louder.(I'm currently selling my m performance exhaust if anyone is interested)
Link to my car:

Doesn't the secondary cat trigger any codes? CEL, I am not ready to buy tunes etc. Just a little more noise without p*sing off my neighbour and boss when I pull into work.

[BMW_F30_]

Originally Posted by Kid_droid

Doesn't the secondary cat trigger any codes? CEL, I am not ready to buy tunes etc. Just a little more noise without p*sing off my neighbour and boss when I pull into work.

I didn't have any error codes. My car was completely stock except for the exhaust. When I needed my car to be quiet, I'd put my car in eco mode so the valves would close. It'll be loud when you want it to be, and quiet when you need it to be.

[Who?]

So whats a secondary cat?

[Kid_droid]

Originally Posted by SJ00

So whats a secondary cat?

I have been trying to see where on the exhaust diagrams the secondary cat is.

Getting a res delete on Tuesday. Apparently if you have N26 you can replace the secondary using an AWE mid-pipe. I have an N20 though. (tempted to do a mid-pipe change)

https://www.uspmotorsports.com/Exhau...015-11014.html

Still a cheaper alternative to a catted down pipe if you are just looking for sound.

I'm going to feedback on the res delete after that, probably leave it a week before I record a clip.

[Gen13 F36]

Secondary cat is not monitored so no CEL

[fondoo1287]

here is my resonator delete on my f36

its loud on cold startup but then quiets down. i find it not obnoxious enough, so i'm waiting for my gthaus to arrive in the following months.

[drivef30]

Originally Posted by fondoo1287

here is my resonator delete on my f36

its loud on cold startup but then quiets down. i find it not obnoxious enough, so i'm waiting for my gthaus to arrive in the following months.

Is that MPE with resonator delete?

[Kid_droid]

I got my resonator delete today, I can already hear the difference louder in comfort, not sure if it needs much breaking in. However the pops and crackle are definitely more noticeable. I will try and upload a video if I can. I have not experienced any drone so far. I still have the MPE back box.

Future mods might be catted downpipe, intake and tune. But for now I'm good with this so far. Low cost but sweet.

[F30bih]

do you have any sound clips of mpe+res delete?