Hi, I’m Krystian and… I’m Addicted to Z4s 😅

Krystian5156

Member
 Scunthorpe
Hello everyone! 👋😄



I finally decided to join your forum.


For the last 4 years I’ve been completely in love with the BMW Z-series.

I’ve always been a BMW enthusiast, but my adventure with the Z started… completely by accident 😅


It was 2021, right after Easter. On Easter Sunday I managed to crash my VW CC (great timing, I know 🫣). A few days later we were flying out on holiday, and on the way back to the UK, browsing cars on my phone, I stumbled on an E85 with the M54B25.


I looked at my wife and said: “Summer is coming… maybe we should buy a little toy for a few months?”

And like she usually does with my weird ideas, she just said: “Sure, buy it — let’s try a cabrio for the summer.”😎


The car wasn’t expensive and needed a lot of love, but at that time I only cared about the driving experience.

And the moment I sat in it and took it for the first ride… boom. Instant chemistry. ❤‍🔥


Of course, me being me — a few days later it rained, I turned off traction control, tried to have some fun on roundabouts… and had a close encounter with a plastic pole 🤦‍♂️. Front bumper and fender took the hit. Didn’t feel great. But I repaired everything.



I drove that car for over a year, but I’ll be honest — it didn’t have an easy life with me 😂

But I finally understood why everyone calls the M54 “bulletproof”.


Eventually more and more things needed fixing, I changed jobs, started doing 60 miles a day, and decided I needed something in better mechanical shape.


So… what did I buy?

Yes — another E85 😁 Same silver colour, lower mileage, better maintained, heated sport seats, bigger wheels… and AND — a FULL STRAIGHT PIPE.

Yes, you read that correctly. I daily-drove 60 miles a day, 5 days a week, for 2 years… on a full straight pipe. Top down? Incredible. Roof closed in winter? Let’s say… “unique atmosphere inside” 😂


Car was slammed to the ground, too — so I learned a whole new driving skillset thanks to UK speed bumps 😅


But the amount of attention the car got, especially from young lads — that always brought back memories of when Ifirst saw a BMW E39 back in Poland as a teenager. That moment made me a BMW fan forever.


But as every adventure eventually ends, this one ended too. A ripped driveshaft support and torn mounting points forced me to look for something more comfortable and slightly less thirsty.

You’ll never guess what I bought…

Yep — my current BMW E89 35i 😄

Why? Because my wife literally said: “What do you mean we’re not having a Z for the summer?!”

What could I do? I had to buy it 😂



I searched for a long time. This time I had a list of conditions.

Finally I found the one, owned by a real enthusiast who treated it like a jewel. The car is beautifully cared for, great spec, and some really tasteful mods:
  • BC Racing coilovers
  • Direnza cold air intake + filter
  • Wagner FMIC
  • Milltek exhaust, decat (cats deleted)
  • SmartTOP by Mods4Cars
  • Custom alloys

Servicing was done properly — not the BMW “longlife” nonsense, but every 6k miles max. I couldn’t say no.

The only thing I knew I’d have to replace eventually were the injectors — 75k miles on the clock.



And indeed, a few weeks ago I installed six brand new BMW index-12 injectors, thinking ahead about some future power upgrades 😉 Also new Bosch spark plugs.


I also refreshed the whole rear braking system: Brembo ceramic pads, carriers, pins, every rubber seal — everything new.

And installed new EPB motors (Autofren Seinsa).

Plus a small cosmetic touch: BMW LED door projectors + Facelift indicators
.
Ah, and yes — I also bought private plates for this beauty 😄

The previous owner had a short 5-character plate and I really liked the look, so I finally decided to get one myself. I always wanted to do it anyway 😎

Every character actually means something personal:
  • KN — my initials,
  • DN — my wife’s initials (and yes, she’s always in the passenger seat — order fully intentional 😁),
  • 5 — the day we got married.
So together it creates a pretty cool, meaningful setup — and perfectly matches which side of the car each of us sits on 😄🚗


Unfortunately, a few days ago I got a sad reminder of what E89 owners know too well:

the infamous right-rear tail light seal leak 💧

Water found its way into the PDC module and roof/boot control module.

The previous owner kept it in a garage, so he had no idea. And as we all know: electronics + water = ✝💀


So now I’m after replacing both modules with good used ones. Lesson learned — and yes, it wasn’t a happy moment.


Plans for next year?

If the turbos allow it, aim for 420–450 hp.

If anything stands in the way — I’ll fix it first and tune later. Also planning a new thermostat and a few other small things, but that’s the 2026 plan.



For now I still drive 60 miles every day and honestly — I really like this car.

BUT BUT… I’ll admit something: with the E85 it was love, with the E89 it’s “positive feelings” 😄

So who knows… maybe I’ll return to the Z4M one day. It’s definitely on my mind…


Anyway — I’ll keep you updated on whatever decisions I make.

Ending this long chaotic intro, but really — where else could I briefly tell the whole story of my love affair with the Z-series? 😁


Cheers everyone,
Krystian
 

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Hi matey! I remember that e85 well!

It was the first ‘loud’ e85 I had and the missus said it brought out the worst in me

I disagree

Good to see you are still in the z4 family!!
 
Welcome to the forum Krystian. :thumbsup:

My Z4 addiction began in 2014!
Thanks for the welcome 👌


I completely understand what you mean about the addiction.


I actually tried to force myself to buy a different BMW model before getting the E89, but as I wrote above… it just didn’t work 😁
 
Welcome..stock turbos will do 400 BHP crank max on 98 Ron fuel..
Thank you for the information about the turbos. I’ll check how much boost mine are still making and what condition they’re in.

The car runs exclusively on 98 RON — I don’t even consider any other fuel.

Based on what you wrote, it confirms what I already suspected to get close to 450+ hp I’ll have to replace the injectors and the turbos, and I also want to add an oil cooler to bring the temps down a bit.


Hi matey! I remember that e85 well!

It was the first ‘loud’ e85 I had and the missus said it brought out the worst in me

I disagree

Good to see you are still in the z4 family!!
Hello and nice to meet you.

Oh yes, that car was definitely loud — but I have to say, the sound always made an impression, and I think that was the special thing about it. It was genuinely a great car, and I put a lot of miles on it.

I always tried to keep it in good condition, but eventually the rust started winning… so it was time to move on.

And honestly — so many times that car surprised newer BMW models on those narrow twisty roads 😁

Great memories 😉
 
Stock turbos will only get to 400bhp ish…almost any hybrid turbo upgrade should get to 500 ish..

A LSD and chassis mods will be needed first if you’re driving the car on Uk roads with any gusto
 
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