95 540i exhaust options

[DaCan23]

Where did you get your Magna/Carsound cats from, and how much each?

Thanks

I had Billy Boat on my MRoadster. I have it on my 540i now. It is the best sound ever. Now that I replaced my cats with the Magnaflow Cats - it sounds even better.

Billy Boat is located at: http://www.bbexhaust.com/

I believe if recall correctly I paid around $700 - JT

[DaCan23]

Heres a BB source for $680

http://shop.store.yahoo.com/hopup1/bbcatbaexbmw.html

[Aussie e34]

I have fitted an Eisenmann rear box to my 540i/6 recently and I know a guy who fitted the Supersprint cat back system to his 540i/6 at about the same time.

The Eisenmann certainly gave mine far more presence than the Superspint - without any drone or annoying noise. At idle, there is a low (but quiet) growl and under load a sweet F1 type of V8 wail (but again, not loud - just nice).
I didn't want to go loud, just a bit more V8 presence and the Eisenmann certainly achieved this.

I took advice from the guys on E34.de first and they all recommended the Eisenmann.

Cheers

are you by chance an aussie?
damn you if you are, as i have got a mate looking at picking me up a eisenmann rear box the sport rather than the standard with the twin 83mm pipes and i didnt know of anyone else in the land of oz that had the eisenmann system.
if you dont mind me asking what did you pay?

[540i/6 rob]

I'm expecting to replace the exhaust on my 6 spd. car in the next several months. I've looked at supersprint & dinan as replacements, aside from just replacing with stock. Could some of you with non-OEM exhaust on your 540 chime in with recommendations & experiences. Mainly, I'll be replacing from aft of the downpipes/cats. Thanks CAM

it still looks and sounds great, and the fit is OEM or better. the car is only minimally louder than stock, but rattles the garage windows nicely. i'd do it again tomorrow.

[saluki540i]

I ended up buying the BB as of this afternoon, mainly after finding out the Dinan was not a full cat back system. Either way, the BB seems like a lot of exhaust for the money, and many people out there with them seem happy. I'm gonna have to get my but back out to the garage and reinstall the tranny in preparation for the exhaust showing up this weekend. I'll post any findings of interest when the car is reassembled and driven. CAM

[MBXB]

Christophe,
Post some pics of the project as you go along. That would be a great help farther down the line.

[saluki540i]

If anyone is interested in pictures of what I'm doing right now, let me know what you need, and I'll take them. Mainly right now I'm cleaning up the underside of the car, replacing some of the hardware that corroded over the years, and preparing to reinstall the 6 spd. when the new rubber shift boot comes in. I've already removed the original flywheel, and replaced it. As of this evening it is torqued, and I just finished installing and torquing the new clutch/pressure plate to the flywheel. The new throwout bearing is ready to go inside the bell housing, and I'll probably wait to bleed the clutch fluid after everything is a little more together under the car. My dad had smacked a racoon a while back, so I ended up replacing two of the plastic underpans, along with the aluminum heat blanket over the rear muffler which was pretty tacky too. BMW recommended ATF for the tranny, but didn't say which, so I ended up calling the dealer to verify. It is either II or III - I went with the III in a full syn. After I get the car back on the ground with the new Billy Boat exhuast installed, I'll probably turn my attention to the driver seat which has one of the "up / down" motors inop. Maybe one of you guys know, but didn't the sport seats have power head rests (up/down)? Let me know. Also, I'd like to thank everybody that has helped me out with this new project - It really simplifies things to get quality input like this forum offers CAM

[Beez540]

I'd like to see pics when you get going on the exhaust swap.

[MTechnik540i]

are you by chance an aussie?
damn you if you are, as i have got a mate looking at picking me up a eisenmann rear box the sport rather than the standard with the twin 83mm pipes and i didnt know of anyone else in the land of oz that had the eisenmann system.
if you dont mind me asking what did you pay?

Is that Sport or Race?

[grave77]

why wouldn't you install the 750 exhaust with a custom cat. I have experimented with my exhaust with a lot of options ... the best was to use free flow catalytic converter or chop it off if allowed and keep the OEM exhaust. recently I used custom mufler instead of the cat. and the 750 exhaust, it gains at least 1 - 3 HP by removing the cat. still as Bruno said on his website ... BMW has designed its exhaust system to be a performance one, just compare the diameter of the BMW exhaust and number of pipes with any other V8 car at the same manufacturing year. you will notice that it's bigger and always uses 2 pipes