[AMT92]

I currently have an OEM M5 diffuser along with M5 mufflers on my 535i. I've been thinking more and more about going with a more aggressive diffuser on the rear, perhaps even carbon fiber. That being said, if I were to get a replica aftermarket diffuser, should I be looking at diffusers made specifically for an M5 to accommodate the mufflers? Will I still be screwed considering the fact that the M5 mufflers sit a tad more inward than standard?

[SLVSRFR]

You need an M5 diffuser but that doesn't necassarily mean it will fit. Are you running the full M5 exhaust? If you're just running the mufflers, the exhaust shop may have had to modify the hangers to get the muffler to sit right with the OEM M5 diffuser. It should bolt right up, but be prepared for possible clearance issues depending if your muffler guy had to make your mufflers 'work'

[AMT92]

Originally Posted by SLVSRFR

You need an M5 diffuser but that doesn't necassarily mean it will fit. Are you running the full M5 exhaust? If you're just running the mufflers, the exhaust shop may have had to modify the hangers to get the muffler to sit right with the OEM M5 diffuser. It should bolt right up, but be prepared for possible clearance issues depending if your muffler guy had to make your mufflers 'work'

Not a full M5 exhaust, just axle back. I'm trying to avoid the extra cost of going into the exhaust shop and having the hangers played with but I guess that's just something I'll have to risk if I move forward with it.

[lsturbointeg]

from what you wrote your exhaust was probably modified to fit the M5 diffuser since it does need to sit more inward. that being said as long as you order any aggressive carbon fiber diffuser for an M5 than you should be fine. but than again when it comes to aftermarket i've seen where someone ordered the same diffuser from the same for example ebay seller and they received something different (batch)

like you i also have a 535i and decided because i'm going for more of the aggressive look i opted for the Carbon Fiber DTM diffuser to go the aggressive sounds of my Meisterschaft's.

[SLVSRFR]

What I'm saying is the 535i mufflers are a different angle from the M5 mufflers. Unless your muffler shop went above and beyond and fabricated pipes to fit the angle of the M5 mufflers from your stock system utilizing the M5 mufflers OEM hanger position. But most exhaust shops just modify the hangers so they don't have to fabricate too much. So, there's a chance your mufflers do not sit in the exact position that an M5's would be. If your muffler guy utilized the OEM hangers, you should be fine.

When I first installed my Carbon DTM Diffuser, I had to move my M5 mufflers because my 550 mufflers were a different angle from the M5 mufflers so my exhaust guy made them work to the OEM M5 Diffuser that I had installed at the same time as the mufflers. But that position didn't work with the DTM Diffuser and had to have the mufflers properly mounted. At that time I just installed the full comp package M5 exhaust and all was well.

[lsturbointeg]

Originally Posted by SLVSRFR

What I'm saying is the 535i mufflers are a different angle from the M5 mufflers. Unless your muffler shop went above and beyond and fabricated pipes to fit the angle of the M5 mufflers from your stock system utilizing the M5 mufflers OEM hanger position. But most exhaust shops just modify the hangers so they don't have to fabricate too much. So, there's a chance your mufflers do not sit in the exact position that an M5's would be. If your muffler guy utilized the OEM hangers, you should be fine.

When I first installed my Carbon DTM Diffuser, I had to move my M5 mufflers because my 550 mufflers were a different angle from the M5 mufflers so my exhaust guy made them work to the OEM M5 Diffuser that I had installed at the same time as the mufflers. But that position didn't work with the DTM Diffuser and had to have the mufflers properly mounted. At that time I just installed the full comp package M5 exhaust and all was well.

same here! i originally was gonna slap on those Meister's and just cut out the section of my non M rear bumper but because i picked up an aftermarket rear bumper and the DTM diffuser the muffler shop will need to make minor adjustments to my exhaust setup. transducer for one thing as the 535i piping is smaller than the 550 and the Meister's i picked up are from a 550i. than he'll need to either modify the OEM hanger or redo the pipe itself...i dunno i'll leave it up to them. but i think the OP already had his done so i'm assuming as long as he sticks with diffusers for an M5 he'll be alright

also, i want them to extend the exhaust to they portrude about this much or a tad less

[AMT92]

Originally Posted by SLVSRFR

What I'm saying is the 535i mufflers are a different angle from the M5 mufflers. Unless your muffler shop went above and beyond and fabricated pipes to fit the angle of the M5 mufflers from your stock system utilizing the M5 mufflers OEM hanger position. But most exhaust shops just modify the hangers so they don't have to fabricate too much. So, there's a chance your mufflers do not sit in the exact position that an M5's would be. If your muffler guy utilized the OEM hangers, you should be fine.

When I first installed my Carbon DTM Diffuser, I had to move my M5 mufflers because my 550 mufflers were a different angle from the M5 mufflers so my exhaust guy made them work to the OEM M5 Diffuser that I had installed at the same time as the mufflers. But that position didn't work with the DTM Diffuser and had to have the mufflers properly mounted. At that time I just installed the full comp package M5 exhaust and all was well.

My M5 mufflers are utilizing the OEM hanger positions, I know that for a fact. I guess I'll just take a gamble if and when I decide to purchase a new diffuser.

[RockyM610]

Yes you're probably better off getting an aftermarket diffuser made for an m5 because you already have an m5 exhaust, the tips are angled closer to the middle. You could also look at aftermarket m5 challenge center diffuser if you don't mind spending a couple hundred more. They come in carbon fiber and sit right in the middle of your oem m5 diffuser. They go for around $500 on ebay and can be installed in 10 minutes. Do you have pics of your current setup?

[AMT92]

Originally Posted by RockyM610

Yes you're probably better off getting an aftermarket diffuser made for an m5 because you already have an m5 exhaust, the tips are angled closer to the middle. You could also look at aftermarket m5 challenge center diffuser if you don't mind spending a couple hundred more. They come in carbon fiber and sit right in the middle of your oem m5 diffuser. They go for around $500 on ebay and can be installed in 10 minutes. Do you have pics of your current setup?

I've thought about the challenger diffuser insert but for $500 I could get two replica diffusers for the price of one insert.

See attached.

[lsturbointeg]

Just thinking about this again but I bet your muffler guy used the OEM hanger locations but probably moved the exhaust to line up with the M5 diffuser. So like mentioned above look for a diffuser for an M5

[RockyM610]

Is it the angle of the phot or does it seem like your tips are sticking to for out?

[AMT92]

Originally Posted by RockyM610

Is it the angle of the phot or does it seem like your tips are sticking to for out?

They're a little further out than most are used to. I like the look.

[AMT92]

Originally Posted by RockyM610

Is it the angle of the phot or does it seem like your tips are sticking to for out?

That being said they are adjustable so I can move them further in if I wish.

[lsturbointeg]

Originally Posted by AMTF10

They're a little further out than most are used to. I like the look.

+1

i like it to stick out too! not too much but kinda like what i posted above

[NV GUNS]

Originally Posted by AMTF10

I've thought about the challenger diffuser insert but for $500 I could get two replica diffusers for the price of one insert.

See attached.

do you have any sound clips? wondering what the N55 sounds sounds like with that setup

[AMT92]

Originally Posted by NV GUNS

do you have any sound clips? wondering what the N55 sounds sounds like with that setup

Here's a cold start. I still need to do a proper rev & flyby video. There's minimal to no drone in the car and with the music on you can't even tell there's an exhaust, but it's definitely noticeable outside. Very sporty, throaty, and tame, which I think is appropriate for this engine. I'll be installing a 3" VRSF catless downpipe soon so that should be interesting lol.

[NV GUNS]

Originally Posted by AMTF10

Here's a cold start. I still need to do a proper rev & flyby video. There's minimal to no drone in the car and with the music on you can't even tell there's an exhaust, but it's definitely noticeable outside. Very sporty, throaty, and tame, which I think is appropriate for this engine. I'll be installing a 3" VRSF catless downpipe soon so that should be interesting lol.

any drone around 1700? sounds like a an M.

[AMT92]

Originally Posted by NV GUNS

any drone around 1700? sounds like a an M.

I actually had j pipes installed to cancel out drone at exactly 1700 rpm. But in all honesty, it was probably overkill.

[NV GUNS]

Originally Posted by AMTF10

I actually had j pipes installed to cancel out drone at exactly 1700 rpm. But in all honesty, it was probably overkill.

mine is pretty bad around that rpm specific RPM area, I just go to sport mode to up the RPM and it is fine but there are low speed areas and sport mode is way over kill. I need to get myself to a good muffler shop.

[AMT92]

Originally Posted by NV GUNS

mine is pretty bad around that rpm specific RPM area, I just go to sport mode to up the RPM and it is fine but there are low speed areas and sport mode is way over kill. I need to get myself to a good muffler shop.

You have a 550i right? Are your vacuum lines installed and functioning? You shouldn't have drone if so.

[NV GUNS]

Originally Posted by AMTF10

You have a 550i right? Are your vacuum lines installed and functioning? You shouldn't have drone if so.

Yup 550, thanks for the knowledge I will check that out.

[HelixBmw]

Hey Guys, quick question, will a 2014 M6 mufflers fit like the M5 on a 2013 550XI? I can buy entire catback set in my area, should i just cut the mufflers off as that would be easier for transport or should i leverage some of the other components?