[Amack]

Hey Guys,

So after sifting through the countless posts about Exhaust setups, I decided to bite the bullet and just get the delete done. Here is my thought process and kinda review thus far.

Car:

m235i Standard, zero engine mods (yet)

Cost/Job: $250 w/ Stainless Steel Tips. Roadway Exhaust Canberra.
They literally just cut the muffler out welded in a flange, job done. Everything else is not touched.

Back when I was a little younger I drove a number of performance cars, S15/14/13, WRX, Skylines etc.. so Im aware I would be moving into the realm of a much louder sound than standard and I have some experience with Modified cars.

Thoughts prior to getting it done:

Reading through the forums I was worried about drone, I was worried that it could be a tad obnoxious. Overall I was worried about it being a little to loud, however I wasnt worried enough I guess not to do it because after all I could always revert and I would loose 250$ Not a massive deal. If I purchase the MPE and Im not happy with the sound there goes 2k + tips and Im not happy and my pockets are sad and Im sad, this would be a sad day for all.

Thoughts after getting it done:

Its actually no where near as loud as I thought it was going to be. Is it loud? Yes it is. Is it roughly as loud as any performance car with a exhaust? Yep spot on. The note is superb, even the muffler shop said it was one of the nicest sounds they have ever heard from a BMW.

Does it drone, hmmm well this I feel comes down to the driver and how much you let things bother you. I dont find it any worse than any other cars ive driven, so to me its not an issue. To some one who has owned quieter cars then it possibly may drone because there not used to it. At the end of the day this car is a 240kw Beast and not a family Ford Falcon I want it to remind me its tuff every time Im in it.

Here are some pics and Vids.

[Amack]

driving through the city had a guy wave me to put my window down.

"fk that sounds sweet, what kind of exhuast is that"

this has been a great success.

[omega145]

I appreciate you sharing your own experience with this. I've been on the fence with this and keep flip flopping between doing a muffler delete, the fabspeed bypass muffler or the M performance exhaust. Thanks to your words and videos, I just made an appt for next Friday to do the muffler delete.
Have you thought of hacking off the resonator to get a louder tone?

[Amack]

Originally Posted by omega145

I appreciate you sharing your own experience with this. I've been on the fence with this and keep flip flopping between doing a muffler delete, the fabspeed bypass muffler or the M performance exhaust. Thanks to your words and videos, I just made an appt for next Friday to do the muffler delete.
Have you thought of hacking off the resonator to get a louder tone?

Im glad you found it useful! I was torn for so long between the MPE and this option.

Ill be hopefully getting a downpipe next month so I feel this will add additional volume.

Ill be leaving the resonator for now.

[Mywifes335]

Downpipe will make a big difference. In my various tests I ran open exhaust just to hear it. The drone is super magnified.

As a comp, it droned More than my Evo X running catless and Agency Power full exhaust.

You can search the threads here. Starvmarv and a few others can attest.

[DavidM235i]

Hey dude, awesome post.
Can we see some fly bys or when it shifts gears.
Thanks

[Amack]

Originally Posted by DavidM235i

Hey dude, awesome post.
Can we see some fly bys or when it shifts gears.
Thanks

Thanks!

Ill Try get some over the weekend

Update after some driving:

Firstly, the wife was not impressed when it started in the garage. Cold start in a 2 car garage sounds awesome to me, not so awesome to her.

I did a some decent driving today around town in traffic and cruising a few places. The sound is great, If you love the burble and want it at specific times you have to down shift at points in the revs to hit it perfect other wise its really not noticeable.

I had 2 people in the back for about a 25k drive through the city and some decent straights and they said "No worse then a Skyline or WRX" I really feel this is dead accurate.

[Anthony235]

Curious to how this will sound when catless. Been looking at various vids, but hard to tell.

I'm coming from many catless cars and more agressive exhast notes (s2k, evo, 370z, etc). I can't imagine it being much louder than those cars.

My car is louder with the catless, but still too quiet for me.

Has anyone retained the exhaust valve on the driver side with the muffler delete option? Wondering if it would still make it quieter....or actually louder when the exhaust is only going through the passenger side...

[mike@x-ph.com]

If user is used to muffler deletes on other cars and he like it, the M235i one is not that bad. Sound is not obnoxious and drone is reasonable (for a muffler delete)

[AK.Alexx]

Originally Posted by Anthony235

Has anyone retained the exhaust valve on the driver side with the muffler delete option? Wondering if it would still make it quieter....or actually louder when the exhaust is only going through the passenger side...

Curious about that to!

[Amack]

I unplugged mine, so I cant comment how it would sound with it fitted.

However you wouldnt want it any louder on cold start it really is booming for 5-10 sec.

[Mywifes335]

If you deleted the muffler, that valve is gone.

[Mywifes335]

I posted this in another thread, but let me know what you guys think:

[bimmer813]

Just found another good muffler delete video:

Eric, if you're on the forum let us know. The car sounds great!

[omega145]

Originally Posted by bimmer813

Just found another good muffler delete video:

Eric, if you're on the forum let us know. The car sounds great!

Yep that's me. I posted this yesterday after I got it done in the "what did you do to your 2 series today" thread.

[Mywifes335]

What diffuser is that?

If they made a quad tip diffuser I totally would've gotten one.

[NickDaGenie]

Whats up guys, I was just wondering does the m235i with a catless downpipe and muffler delete backfire with some flame out the exhaust? does it need jb4 for that to happen? thanks

[omega145]

No...you aren't going to get flames out the back. I don't get why people want to do that. Have to introduce source of ignition in order to get flames like a flame kit or some nonsense like that.

[Mywifes335]

You can probably tune it to pull ignition and dump fuel on lift - basically exaggerate the current overrun programming.

Flames are when unburnt fuel is dumped and then ignited by the hot exhaust.

Then you'll need a completely straight through exhaust.

I had fire in my Evo X.

[Alfonso235i]

Originally Posted by omega145

No...you aren't going to get flames out the back. I don't get why people want to do that. Have to introduce source of ignition in order to get flames like a flame kit or some nonsense like that.

My 2015 WRX catless dp on e-85 shot out flames on some shifts. Ill post a pic, this is what hes asking about, not those kits they sell...
Btw OP your car sounds great, i will be doing this to mine soon. Great post!

[Alfonso235i]

Originally Posted by Alfonso235i

My 2015 WRX catless dp on e-85 shot out flames on some shifts. Ill post a pic, this is what hes asking about, not those kits they sell...

Not my car, this pic is from my tuners fb. I have seen multiple cars do this, on dynos and the street. My car did the exact same thing on the dyno.

[Anthony235]

Originally Posted by Mywifes335

If you deleted the muffler, that valve is gone.

Usually yes, but you can still fit it to the pipe with a muffler delete.