[mjd335]

I have an 07 e90 335i with catless dp's+xpipe+pe mod, what should I add or change to rid the tin can raspy noise that comes in around 3-5k rpms?
I did search but couldnt find my exact combo.
I was thinking replacing seconaries with vibrant resi's or going back to stock mufflers? I really dont feel like losing the dp's but if that my only option I'll do what I have to
TIA

[9krpmrx8]

Just buy a proper cat back.

[E30_335i]

My Corsa mufflers sound great. No rasp and very little drone.

[STR8-6IX]

dont waste your money on a catback. putting your secondaries back in place isnt going to do much for you either. You should put your resonator back in place.

[mjd335]

Originally Posted by E30_335i

My Corsa mufflers sound great. No rasp and very little drone.

corsa mufflers do sound nice but not trying to spend that on my exhaust, I'm dumping too much into suspension ATM and have some maintenance due also. But thanks

[mjd335]

Originally Posted by 6IX-F10-N52

dont waste your money on a catback. putting your secondaries back in place isnt going to do much for you either. You should put your resonator back in place.

I havent touched my secondaries as of yet and reguading the resonator, e92 exhausts dont have it and sound good with the Xpipe?

[STR8-6IX]

Originally Posted by mjd335

I havent touched my secondaries as of yet and reguading the resonator, e92 exhausts dont have it and sound good with the Xpipe?

oh true, I did not know this. i was mentioning a resonator because lack of one is what causes drone particularly at highway rpms. you also lose torque from a resonator delete unless you install an x-pipe in the same spot where the res used to be in order to combat this.

as for drone, most of it is being caused by your downpipe and also the fact that you are running PE mod muffler with the downpipe. honestly, I wouldnt bother. Im sure it still sounds great and the rasp is just part of the inline 6 experience for me.

[mjd335]

Trust me something is off. I wish I had a gopro to post a sound clip. The rasp is only present during accelaration, so making a sound clip of me reving my engine in my driveway wont explain it. lol
I think if i go back to stock mufflers it'll go away, but it's only a theory and I'm trying to get some other opinions. At this point i'm not so much looking for loudness just a more refined tone. I appreciate your help

[Gohan335i7]

Originally Posted by 9krpmrx8

Just buy a proper cat back.

What he said☝🏻. save save save...

[mjd335]

Originally Posted by Gohan335i7

What he said☝🏻. save save save...

I did search all over as I explained in the OP. It's not an option. there are more important things spend $$$ on, especially when the exhaust just needs a tweak to be fixed.
Still looking for advice other than buying an exhaust

[BSM n54iS]

Put vibrant resonators in where you see fit, sec. cat converter only helps in reducing sound/smoke so wouldn't necessarily suggest all out swapping those in that place if you're complaining about rasp now.

Or it could be that you f'ed up the PE mod?

[mjd335]

Originally Posted by Black n54is

Put vibrant resonators in where you see fit, sec. cat converter only helps in reducing sound/smoke so wouldn't necessarily suggest all out swapping those in that place if you're complaining about rasp now.

Or it could be that you f'ed up the PE mod?

This was the order of installations
1. downpipes
2. pe mod
3. x-pipe
A reputable guy did my pe mod, so I doubt there is anything wrong with it. The exhaust started making a tin can sound after the the xpipe was installed, but if coupes have an xpipe?
It wasn't even that loud after the dp's and the pe mod,
So from what I'm gathering if i get catted dp's the rasp will go away?

[BSM n54iS]

Originally Posted by mjd335

This was the order of installations
1. downpipes
2. pe mod
3. x-pipe
A reputable guy did my pe mod, so I doubt there is anything wrong with it. The exhaust started making a tin can sound after the the xpipe was installed, but if coupes have an xpipe?
It wasn't even that loud after the dp's and the pe mod,
So from what I'm gathering if i get catted dp's the rasp will go away?

Wait, are you in a coupe or a sedan? Sounds like than you had that resonater thing that e90's have so yea changing the flow of the exhaust with the xpipe is where it came from then. If I were you I'd throw a pair of vibrant resonators on, don't switch the dp. It'll be cheap for the vibrants and a shop to install, and that will give you a noticeable change

[mjd335]

Originally Posted by Black n54is

Wait, are you in a coupe or a sedan? Sounds like than you had that resonater thing that e90's have so yea changing the flow of the exhaust with the xpipe is where it came from then. If I were you I'd throw a pair of vibrant resonators on, don't switch the dp. It'll be cheap for the vibrants and a shop to install, and that will give you a noticeable change

yea I'm in a sedan, and just to be clear you're saying to add the vibrant resi's not swap the secondaries with the vib resi's? If so where would they fit isn't it tight under there? It's been a while since I've seen under the car. Thanks man

[BSM n54iS]

Originally Posted by mjd335

yea I'm in a sedan, and just to be clear you're saying to add the vibrant resi's not swap the secondaries with the vib resi's? If so where would they fit isn't it tight under there? It's been a while since I've seen under the car. Thanks man

Yea that's the trick right there, hard to pick where if not swapping the secondaries, I'm in a coupe too so not sure where the differences are. Maybe see if you can put them in place of the xpipe with a little custom work before/after. I'm no expert, get some others' opinion on replacing the sec but if you have rasp now ya know..

[mjd335]

Originally Posted by Black n54is

Yea that's the trick right there, hard to pick where if not swapping the secondaries, I'm in a coupe too so not sure where the differences are. Maybe see if you can put them in place of the xpipe with a little custom work before/after. I'm no expert, get some others' opinion on replacing the sec but if you have rasp now ya know..

ok great! thanks A LOT for your info. I'll start there and see what the exhaust shop can do.

[!LEFTCOAST!]

Originally Posted by mjd335

ok great! thanks A LOT for your info. I'll start there and see what the exhaust shop can do.

When I added resonators to the x pipe location exhausted sounded horrible. Whatever you end up doing keep your x pipe. Also, when you'd place your palm against your exhaust tip the pressure wasn't an even steady flow but rather became pulsating. My guess is because pressure in both banks were no longer being equalized from the x pipe.

[BSM n54iS]

Originally Posted by !LEFTCOAST!

When I added resonators to the x pipe location exhausted sounded horrible. Whatever you end up doing keep your x pipe. Also, when you'd place your palm against your exhaust tip the pressure wasn't an even steady flow but rather became pulsating. My guess is because pressure in both banks were no longer being equalized from the x pipe.

And you added the xpipe in place of that big resonater thing that comes there stock right? Then put resonators in place of the xpipe?

[!LEFTCOAST!]

Originally Posted by Black n54is

And you added the xpipe in place of that big resonater thing that comes there stock right? Then put resonators in place of the xpipe?

No, e92's don't come with a stock resonator. That setup is gone I'm running a Vanguard V2 now.

[mjd335]

I can tell you this by the way it idles- It sounds like bababababa and when i give it quick revs and it does that crackle and pop thing. It sounds good though (in my non expert opinion) while idling. I was also thinking just maybe it has something to do with the MHD tune stage 2? Either way my car is lowered and i honestly dont know where the vibrants will fit.
I'm definatley not about to drop 1500 on an exhaust so if i dont figure it out I'm just going to swap the downpipes back to stock and it'll be just like a coupe with a pe mod.

[mjd335]

Originally Posted by Black n54is

And you added the xpipe in place of that big resonater thing that comes there stock right? Then put resonators in place of the xpipe?

If i put resonators in place of the xpipe (where the stock resonator/ 3rd muffler was) wouldn't the 2 banks not be equal?

[BSM n54iS]

Originally Posted by mjd335

If i put resonators in place of the xpipe (where the stock resonator/ 3rd muffler was) wouldn't the 2 banks not be equal?

Pretty much, you'd have a true full dual exhaust