Barty's Green Z4 Coupé - Not another one…

Barty said:
Abbas said:
Barty said:
Absolutely bang on! Combined with the Bastuck backbox, it sounds like it should now 8)

What would your recommendation be to make a stock Z4 exhaust sound great? I wouldn't want to spend more than £800ish. Somewhere around £400 would be perfect! I know everyone has a different answer, so would be great to know your thoughts!


It depends on what you want. If you just want a slightly more deep or throaty sound without too much loudness, go for a different backbox such as the Bastuck or Eisenmann. They come up second hand every now and then and require minimal work to fit.

If you want a bit more, leave the backbox as it is and change the mid-section to a non-resonated one. Bastuck make one that requires you to cut the original pipes, or go to an exhaust specialist and have a set made up. Should be able to for £400. This will give you a bit more oomph under load, burbles on the overrun and little to no risk of drone.

If you twisted my arm and I had to pick between the two, then I’d go for the deresonated midsection and leave the backbox as-is. You could then always upgrade the backbox in the future if you felt so inclined.

Finally, gutting the original backbox is a no for me: increased drone kills the fun in my book.

My two penneth! If you’re at Ultimate BMW on April 28th, you’re welcome to have a listen :thumbsup:

That's a huge help mate. I may do the mid-section job then, and eventually get an Eisenmann backbox. The no risk of drone kind of sold me as I want as refined a sound as possible while still having a lot of character. I haven't seen a Bastuck one online, is it hard to get hold of one?

I may just be at ultimate BMW! Let's see how we go. Be good to meet a few people off here.
 
2024 is a few months old now, so quick interim update! First of all, I scored a set of decent winter wheels for less than a 100 euro's. That's wheels and tyres (reasonable tread left still) for less than a tank of fuel- briliant.

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Gotta say, I like the look! I had decided on different summer wheels, however another big purchase has since thrown a huge spanner in the works: I've bought a house! My GF and I had been looking for a while, when suddenly sometime mid February we came across the perfect spot. Although this means some of my Zed-plans will have to be put off for the time being, I'm over the moon with this next step. Naturally, I'll build myself a nice workspace too so I can work on my car -and others- in peace (and more importantly, warmth and comfort!).

So does that mean I haven't moved forward with the Zed at all? Err, well...

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Say "hi" to Zed No.3: an M-roadster- or what's left of it. Managed to pick this up at a good price, so what's the idea? Well, in preparation for my big project on the green machine, I need the full running gear from an M. That's front- and rear subframe, drive shafts, M-diff, suspension arms front and rear... The lot really. In due time, the N52, current gearbox, drivetrain, and full suspension and brake setup will exit and find their new home in a to-be purchased 2.0L donor, creating a fun roadster runabout. The coupe will get a new heart at that point... :evil: Oh and yes, that Z8 in the background is absolutely stunning :wub:

All that work was originally planned for next autumn, but I'll be moving in October so realistically it will have to wait for at least another year. Oh well! Meanwhile, I also snagged up a new daily driver back in January:

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A lovely E91 325i LCI in Monaco Blue with a saddle brown interior. It belonged to a German BMW mechanic who has fastidiously maintained it, tackling all the typical N53 quirks and issues when he got it 4 years ago. Interesting to experience what is in essence the successor to our N52's. The smooth, lineair character of the atmospheric straight six is very similar to the N52. Fuel consumption is down significantly, running about 7.5L per 100km compared to the 8.9L I get from the Z4 (which is about 250kg lighter too). This is partly due to the direct injection, which unfortunately also kills the beautiful soundtrack at idle you'd normally get. The injectors are loud, but as soon as you set off it reverts back to type and produces a sonorous, quiet hum that is in no way intrusive even when cruising at 160km/h.

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You really only get to know a car on a longer trip, so [ref]MaldivesMax[/ref] and I set off for a pair of M-sport seats he needed for his roadster. We had already collected another pair, but those were non-heated electrics. These are heated manuals, exactly as he wanted them. I've got something planned for the electric set, so more on that in about a month.

The 3'er performed flawlessly, getting us to [ref]BigWinn[/ref] on a single tank of fuel, then getting us back home again on another. Averaging 97.8 km/h, the 1500km flew by that day. Besides the short wait on the train, we really managed to keep moving all day long. Nice!

So what's next? Expect an update on Max's seats and mine in about a month, roadtrip to Ultimate BMW by the end of April (anyone else here going?!) followed by a few days of fun in Wales. Any recommendations, feel free to share :driving:
 
I love that 3er- superb spec and look sublime

If it was a right hooker I’d have it when you’ve finished with it
 
All the want for that Z8 in the background, and is that a Porsche 928 up on the ramp trying its best to sneak into the photo?
 
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Well isn’t this a nice little surprise after a long day’s work… got back to the car, parked away from everyone else in a spacious multi-story only to find this massive scrape over the front wing and door, leaving a nice dent as a bonus :headbang:

Cue 10 minutes of R-rated profanity and a somewhat deflated drive home over the fact that people don’t bother to leave notes these days, and onto repairs.

Gave the car a thorough wash and set about removing the transfer from the “donor-vehicle”.

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The result is much improved already, as for the scratches and dent: I’ll lightly correct the paint this weekend, then my dent repair guy will tackle the panel sometime next week, after which a final finish will follow. Such a sh*t ending to what otherwise was a lovely day. Really enjoyed driving the Zed again in sunnier weather- I guess s**t just happens eh…
 
Damn, you can only hope for good drivers when parked in public places, sadly that's not always the case.
I always watch out, but when there is a nice car, I always have that extra voice in my head like "I should watch out even more!". Maybe some people have it the other way around? :?

Nice car collection you have btw :thumbsup:
 
Barty said:
I guess s**t just happens eh…

That is a real bummer . Some people just don`t give a s**t . Any CCTV in car park ?? Hope your dent guy gets it sorted .
 
Ben_Z4 said:
Nice car collection you have btw

Oh how I wish those were mine… then again- I really don’t want to complain: having the coupe and 3’er is a lovely place to be at.

As for CCTV: no dice. Not only aren’t there cameras on the deck itself, police don’t request footage in case of such a minor scrape. While I’m hugely fond- and take good care of my Zed, it’s ultimately just another car. Police need to prioritise work, and this -understandably- falls very low on that ladder.

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My guy took a quick look this morning and expects to be able to make that a lot better. Fingers crossed, booked in for next week Saturday. For now, I’m going to enjoy a freshly washed car that’s still every bit as lovely to drive. I refuse to let some inconsiderate womble get me down :thumbsup:
 
Could have been a lot worse! Good thing about cars, pretty much anything is fixable (With a bit of time, money and hassle) and you'll never know it happened. All will be forgotten :)
 
sorry to read about the carpark scrape, that sucks.. ill bet youll have it looking perfect before long. Congrats on the house :D :thumbsup:
 
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