My new 1995 540i/6

BMWben

Snap said:

Dominic's 540 with "muffler delete" sounds amazing.

Im a fan of electronic cutouts, it would be a nice option.

I am worried that the exhaust I am making for my car (just a 14" long resonator) is going to be stupid loud

I would like to hear what he did to his system as well. Chris showed me videos though and it is great.

straight6pwr said:

you and all your neighbors will soon learn to hate your car. straight pipe was cool on my car for exactly 2 days, then the highway drone drove me crazy.

dont just hack off your exhaust because you want more sound but can't afford to do it correctly.

This is true, I can always see what it is like though, the cats and resonator would still be on so maybe it wouldn't be to ridiculous. Money is also a factor too, I don't know what my funds will be like this summer for sure.

Earl said:

Why not remove the Dinan exhaust and sell it since it should be worth some money. Then either find a stock exhaust and hack it up or have one welded up? Idk if the exhaust routing is the same for our cars but if it is I would trade you my stock exhaust for the Dinan

What exhaust would I be trading mine for or off of what car? That would be easier then selling it but I would be nice to have the cash to put something into my new exhaust though.

Earl

Stock e34 525i exhaust. I can't find any threads on people swappung exhausts between 540's and 525's but they do say that they are routed the same way and are very similar. That leads me to believe they would swap fairly easily. We can get together some time and look at them side by side.

BMWben

Earl said:

Stock e34 525i exhaust. I can't find any threads on people swappung exhausts between 540's and 525's but they do say that they are routed the same way and are very similar. That leads me to believe they would swap fairly easily. We can get together some time and look at them side by side.

I believe the 540 has a duel 2.25 all the way back and the 525 is probably only a single. They look similar from the realoem diagrams but not exactly the same.

Dominic540

CYoung said:

Hopefully Dominic will chime in but since I've ridden/driven his car I can attest to it being very quiet on the highway and during city driving since the stock resonators are still in place. Check out the videos he posted on his gopro mount thread.

I've heard Mike's 528e too and it sounds good too.

I agree with Earl, even though the Dinan exhaust might be tired it still could be sold and a stock catback would be a good candidate for a muffler delete.

I have no real issue with any drone or resonating except at ~1800-2000RPM. Even then, it is by no means unbearable. After I cut off the muffler I did not put a straight pipe in its place. If I were to do that, I am almost positive that the resonating would go away completely.

BMWben said:

I would like to hear what he did to his system as well. Chris showed me videos though and it is great.

I am not sure how the exhaust is routed on the e34, but for mine it was very simple. All that I removed were the two scuba tank like mufflers at the rear of the car. (Cut it with a sawzall about 4" beyond the rear axle if I remember correctly.) I still have the cats and resonator in place. Eventually, I plan to extend the pipe to the back of the car, just haven't gotten around to it.

Earl

They seem like they will swap with little modification. I will keep looking into it=)

BMWben

someone said:

I am not sure how the exhaust is routed on the e34, but for mine it was very simple.

Looking at realoem again the systems look pretty different. When I get home I'll probably end up cutting off the rear muffler and seeing how loud it is. If its to much then I'll throw a magnaflow on there or something, maybe a dynomax vt. Can't do anything for another month and a half still.

Earl

Why not find a stock exhaust and hack it up? Cutting up a perfectly good Dinan exhaust doesnt make sense to me. Especially since there are more e34's in the junkyard than on the road and you could score a catback off of one of those for way cheaper than you could sell the Dinan

jc43089

^ What Earl said, don't hack up the Dinan.

wasnt m3

You could sell the dinan and build a custom exhaust for not much more.

jc43089

Even to make a temporary custom exhaust costs almost nothing, Mike and I made a full custom exhaust for his e28 and the only expense was 30 bucks for a glass pack and 15 for a shiny tip. There are plenty of guys over there that could weld something together for you.

Earl

And this guy would be interested in the Dinan exhaust and throwing you a 525 exhaust to use for parts

jc43089

Even if the 525 exhaust doesn't match, the flange probably does and the bends can be used to get the muffler and tip where you want them. Then you have a removable custom catback.

Earl

Boom!

Earl

The eisenmann system looks to be the same for both 525's and 540's here.

http://www.emnotek.com/p-762-bmw-e34-eisenmann-exhaust.aspx

RamRod E28

What John said my e28 sounds nasty and all we used is was 2 old exhaust systems and i can be safe to say that my e28 is the only one with a custom x pipe with cat delete and only a glasspack with a truly centered twin chrome tip setup!

BMWben

Good news! Chris was under the car the other day and said it looks clean underneath, always a good thing. Also, he saw that the muffler should just unclamp from the rest of the exhaust making it much easier to see what the system is like without it and then throwing it back on if it is to loud. Also I did some looking around for Magnaflow mufflers and I found this beauty.

As you can see in the video is a Magnaflow, I just called Miller Performance and was told that the build used the muffler #12468 and resonator #11379. I would like to go with this muffler/resonator because it doesn't just sound like an american muscle V8 like other magnaflows which was why I was a little hesitant of going with them. It has more of a sporty tone to it or european I suppose, I like it a lot. One question I have is what are those ball looking things before the resonator, cats or what? Not that I necessarily need them I'm just more curious. Another thing is how am I going to keep the O2 sensors? According to this real ome picture, the O2 sensors (#21) are in the front of the cats. Can I just put new piping there and screw/tread a hole for them? I don't want to cause any problems with the car running rich, V8 mileage doesn't need any reasons to get worse. I suppose the O2 sensor could be in a different spot on the Dinan exhaust but if I find a different exhaust to chop up then I'll need to figure this out still.

YoungCR

Thats what I was hoping the Dinan exhaust would sound like under load... Welding in O2 sensor bungs is not an issue on the custom exhaust.

Earl

The Dinan is a catback and not a full exhaust isn't it? Welding in new o2 bungs is quite simple.

BMWben

Earl said:

The Dinan is a catback and not a full exhaust isn't it? Welding in new o2 bungs is quite simple.

Just another reason why I need to learn how to weld. I don't know about the Dinan being cat back or full either

PerryLa79

Don't straight pipe it that's way to loud I know already.

WIBIMMERS

My new 1995 540i/6