[nthanos330i]

I had a magnaflow 14815 Street series muffler installed last week. I left the resonator intact to avoid drone, but I still get just a little under load --nothing turning up the radio doesn't fix . The muffler has not completely broken in yet, of course, but I am starting to notice some crackles on downshifts in "DS". For right now, I'm leaving the tips as they are, but will most likely have them cut and welded on to be more straight out the back.

[STR8-6IX]

absolutely in love with how the exhaust tips are angled like that.

I've been toying with the idea of adding a magnaflow muffler to my n52 equipped F10 for a while now.. looks like you have me sold.

Not sure if this still applies to newer BMW ecu's but its reccomended you dont do any full throttle pulls for the first 100 miles. after this, lots of real world driving will help your ECU adjust well so you can get maximum gains from your new muffler. most of the "break-in process" for new exhaust components is actually your ECU adjusting fuel/ignition timing to compensate for the modification in exhaust flow. this process took me roughly 400KM to complete when i had my secondaries deleted.

great to see you kept your resonator intact - not recommended you delete it as the drone will be atrocious around 2500-3000RPM and you actually LOSE torque unless you fit an x-pipe in the same place where the res used to be.

next step for you is a secondary cat delete!! the gains are quite nice and the sound along with your new muffler will be great. I already have mine deleted and am looking to install a magnaflow muffler very soon.

please film a fly-by video with this muffler!

cheers!

[nthanos330i]

Originally Posted by 6IX-F10-N52

absolutely in love with how the exhaust tips are angled like that.

I've been toying with the idea of adding a magnaflow muffler to my n52 equipped F10 for a while now.. looks like you have me sold.

Not sure if this still applies to newer BMW ecu's but its reccomended you dont do any full throttle pulls for the first 100 miles. after this, lots of real world driving will help your ECU adjust well so you can get maximum gains from your new muffler. most of the "break-in process" for new exhaust components is actually your ECU adjusting fuel/ignition timing to compensate for the modification in exhaust flow. this process took me roughly 400KM to complete when i had my secondaries deleted.

great to see you kept your resonator intact - not recommended you delete it as the drone will be atrocious around 2500-3000RPM and you actually LOSE torque unless you fit an x-pipe in the same place where the res used to be.

next step for you is a secondary cat delete!! the gains are quite nice and the sound along with your new muffler will be great. I already have mine deleted and am looking to install a magnaflow muffler very soon.

please film a fly-by video with this muffler!

cheers!

I'll try to get that video! And sadly, being a CA resident where emissions standards are rather high, I don't see a cat delete in my future

[STR8-6IX]

Originally Posted by nthanos330i

I'll try to get that video! And sadly, being a CA resident where emissions standards are rather high, I don't see a cat delete in my future

I meant secondary cats as you will pass the sniffer test with these removed, but then i remember you may not pass the visual inspection you have in cali.

perhaps if you personally know the shop owner when you go to get your emission test, they will pass you. whenever I have mechanics look underneath my car they dont even notice that the secondaries are gone because its just piping in place, you have to be specifically looking for it.

How does your car sound with the muffler? is there any drone at all? do you feel any power gains?

[STR8-6IX]

Originally Posted by nthanos330i

I'll try to get that video! And sadly, being a CA resident where emissions standards are rather high, I don't see a cat delete in my future

also, what inlet size for the muffler did you pick, 2.25? how is it in terms of install? you just saw off the old muffler and weld the new one on right? nothing unexpected that my muffler guy will run into?

many thanks!

[nthanos330i]

Originally Posted by 6IX-F10-N52

also, what inlet size for the muffler did you pick, 2.25? how is it in terms of install? you just saw off the old muffler and weld the new one on right? nothing unexpected that my muffler guy will run into?

many thanks!

I think the inlet was 2.5 on the new muffler. The stock piping may have been 2.75. The muffler guy didn't have any problems though.

[nthanos330i]

Originally Posted by 6IX-F10-N52

I meant secondary cats as you will pass the sniffer test with these removed, but then i remember you may not pass the visual inspection you have in cali.

perhaps if you personally know the shop owner when you go to get your emission test, they will pass you. whenever I have mechanics look underneath my car they dont even notice that the secondaries are gone because its just piping in place, you have to be specifically looking for it.

How does your car sound with the muffler? is there any drone at all? do you feel any power gains?

There is a little drone under load if I'm being honest. Cruising on the freeway and around town though, there really isn't anything. You may want to add vibrant resonators or something in place of the factory one.

[STR8-6IX]

Originally Posted by nthanos330i

There is a little drone under load if I'm being honest. Cruising on the freeway and around town though, there really isn't anything. You may want to add vibrant resonators or something in place of the factory one.

the 14815 muffler you have is a 2.25 inlet. I guess ill be going with the same one because those 3 inch tips look awesome. any performance gains worth noting?

[nthanos330i]

Originally Posted by 6IX-F10-N52

the 14815 muffler you have is a 2.25 inlet. I guess ill be going with the same one because those 3 inch tips look awesome. any performance gains worth noting?

I guess it is then haha. Um, not particularity, however I have a BMS Powerbox on my car, and would highly recommend that if your looking for a more sporty driving experience. It really livens up the engine.

[mike@x-ph.com]

Sounds much better than stock

[STR8-6IX]

Originally Posted by nthanos330i

I guess it is then haha. Um, not particularity, however I have a BMS Powerbox on my car, and would highly recommend that if your looking for a more sporty driving experience. It really livens up the engine.

fly-by video PLEASE!

the only other video of a magnaflow e90 fly-by was filmed 5+ years ago with a potato.

[nthanos330i]

Originally Posted by 6IX-F10-N52

fly-by video PLEASE!

the only other video of a magnaflow e90 fly-by was filmed 5+ years ago with a potato.

I'll try my best but it won't be for a while. I park my car during the week while I'm at school. I'll try this coming weekend.

[STR8-6IX]

Originally Posted by nthanos330i

I'll try my best but it won't be for a while. I park my car during the week while I'm at school. I'll try this coming weekend.

hey man, so I finally got the Muffler installed! heres what is sounds like with secondary cats deleted:

the blank video of me revving picked up the sound quality really nicely...

in the flyby video, it sounds WAY louder in person.

I have a different muffler from yours with custom tips welded on. I like your style exhaust tips better, and I think your muffler looks amazing angled out of the back like that.

Is the exhaust sound with and without secondary cats noticeable? what do you think? thanks!

[nthanos330i]

Originally Posted by 6IX-F10-N52

hey man, so I finally got the Muffler installed! heres what is sounds like with secondary cats deleted:

the blank video of me revving picked up the sound quality really nicely...

in the flyby video, it sounds WAY louder in person.

I have a different muffler from yours with custom tips welded on. I like your style exhaust tips better, and I think your muffler looks amazing angled out of the back like that.

Is the exhaust sound with and without secondary cats noticeable? what do you think? thanks!

Sounds good!

[Jarrod]

Originally Posted by 6IX-F10-N52

in the flyby video, it sounds WAY louder in person.

<Blows right through a stop sign at 60kph>

[Kismail1]

Im looking to add this to my 328 xdrive with a res delete but cant find anything on fitment for an xdrive .
any ideas on Magnaflow 14815 fitting an xdrive ??

[nthanos330i]

Originally Posted by Kismail1

Im looking to add this to my 328 xdrive with a res delete but cant find anything on fitment for an xdrive .
any ideas on Magnaflow 14815 fitting an xdrive ??

I think you should be fine. The muffler is completely behind the rear axel, so x-drive shouldn't affect anything. And post an update about your experience with the res delete, I've been on the fence about it.

[noah.s]

Originally Posted by nthanos330i

I think you should be fine. The muffler is completely behind the rear axel, so x-drive shouldn't affect anything. And post an update about your experience with the res delete, I've been on the fence about it.

I ended up redoing my exhaust after I bought the car since the previous owner had a shitty job done on it.

From the headers back it goes into 1 high flow cat, and then into a magnaflow muffler (idk the part number, it's a universal muffler). No resonator and I think it sounds great. It's not too loud and I get some nice crackles and pops.

I can try and get a video if anyone is interested.

[Kismail1]

Originally Posted by nthanos330i

I think you should be fine. The muffler is completely behind the rear axel, so x-drive shouldn't affect anything. And post an update about your experience with the res delete, I've been on the fence about it.

I will update. Looking to get it done in a few weeks. It's going to snow here again ..... like it's almost April. I'll probably do it mid April and let you know. I don't think drone is going to be too big an issue . I hope.

[STR8-6IX]

Originally Posted by noah.s

I ended up redoing my exhaust after I bought the car since the previous owner had a shitty job done on it.

From the headers back it goes into 1 high flow cat, and then into a magnaflow muffler (idk the part number, it's a universal muffler). No resonator and I think it sounds great. It's not too loud and I get some nice crackles and pops.

I can try and get a video if anyone is interested.

factory or aftermarket headers?

you might want to put your resonator back on and delete your secondary cats instead, it will sound better.

[noah.s]

Originally Posted by STR8-6IX

factory or aftermarket headers?

you might want to put your resonator back on and delete your secondary cats instead, it will sound better.

Factory.
I never had the stock exhaust, it came with a shoddily done custom exhaust, so I don't have a resonator to put back on. Looked for a stock exhaust and couldn't find one local so I just had one made at a shop.
It sounds good to me and I've had plenty of compliments on it so I don't think I'll mess with it.

[STR8-6IX]

Originally Posted by noah.s

Factory.
I never had the stock exhaust, it came with a shoddily done custom exhaust, so I don't have a resonator to put back on. Looked for a stock exhaust and couldn't find one local so I just had one made at a shop.
It sounds good to me and I've had plenty of compliments on it so I don't think I'll mess with it.

could you upload a picture of your ghetto aftermarket exhaust?

I I highly recommend you remove the high flow cat (you already have cats in the manifold, not needed) and install something like a vibrant resonator underneath the rear seats. it will sound deeper and more throaty without that useless high flow cat and the resonator will get rid of the annoying drones and frequencies with your exhaust setup without really hurting overall sound. it will be great.

I really dont understand why the previous owner would install a whole new exhaust system when you can just delete the secondary cats on the OEM setup and install a high flow muffler in place of the restrictive stock one. less work, probably less money and an overall better sound.

the resonator is important. you lose torque without one so make sure to put some sort of aftermarket one on. would like to see pics of your current setup.