Alex: That engine sounds a bit ropy! BMW specialist: That is the best engine I’ve ever tested!

big shout out to bruno man, the fact that he's willing to give a lot of time for us viewers.... man what a great lad

Bruno is a rare find and adds alot of entertainment value. Good episode!

Can we big up Bruno, my man been offsetting his actual business for CH so I hope man getting paid enough to work with them.

Ethan's moving up in the world -- from changing a tyre to doing a stage 2 map on a Z3! The next video should be "Non-Car Guy Builds Car"!

Ethan just casually resting his new alloy wheel in a hedge 😂

“15 minus 5” “imperial” had me fucking rolling 😂😂

This is so sick! The owner of more than tyres is my dad so seeing this is so cool ❤️

The theory that Ethan is actually the most car guy out of all of them and for years he's been faking and now is slowing becoming what he has always been is interesting and I like to believe it.

Been looking forward to a project Z3 update for ages, great job. Love the show! 👌

Bruno seems to be getting more comfortable with the camera. that CUT! was hilarious. and I thought Ethan was going to hug him when the rocker cover was brought out. Alex would have...

09:05 It’s at this point Ethan realises he is a fully qualified mechanic.

Few days ago, I done my first ever car mod - It was literally changing the hubcaps. *I can honestly say it was one of the most happiest days of my life*

Bruno is excellent entertainment. He is like the Inspector Clouseau of the mechanics. Well maybe a cross between Inspector Clouseau & Papa Lazarou.

BDS knows so much about the M4X motors it’s astounding

"The Milkman strikes again!"- that should become a slogan of every Ethan's appearance!)))

I love these Ethan centric videos. He’s friggin hilarious 😂

I love Ethan‘s excitement for everything that’s new to him, it’s like watching a child opening that one big toy under the Christmas tree and seeing the excitement in their face 😂

Bruno is a legend. Prove me wrong.

Bruno representing the good Portuguese lads

Bruno genuinely wanting him to learn is honestly so refreshing to see.

"You were right once again, it's a 12-2" 🤣🤣🤣

"I moved the limiter, 6900 is a good number"! ...hits it on the first pull :-D

You can tell right away that if it wasn’t for Ethan, Bruno would trash the engine beyond repair. Glad to see Ethan helping the inexperienced!

Bruno has the patience of a saint and the comic timing of Ricky Gervase………top chap!

The ratchet part was actually mind blowing

Ethan buying the wheels, good work boys he's broken his cherry 🍒🤣

I really love Ethan's dedication to this car, he has improved so much!! Nice job mate👌🏻

I love where this is going but I think the absolute pinnacle of Ethan's journey would be to enter him in some racing event in his Z3, with Alex mentoring him along the way, Jack providing the funny banter and camera shit.

actually love these types of vids with the knowledge bruno provides really is interesting and would be a great person to learn off of

Finally another z3 video, m44 ftw

Looking forward to the “Bruno & Ethan Show” coming soon!

Love how much Bruno is coming out of his shell on camera! Awesome episode lads had me cracking up!

It's so good to see Ethan taking the time to teach Bruno

I just love how Bruno looks completely uninterested in life, but my god he's brilliant 🤣 Still waiting for the day where he just chins Ethan 🤣

The personal chemistry between Ethan and Bruno is pure comedy gold - extremely entertaining to watch!

He even installed an aftermarket cat!

It’s a privilege to know Bruno for so long, and to see what he built out of scratch only with solid hard work. Um abraço!!!

Bruno is becoming a fast favourite of mine hope he is in a lot more videos :) he’s a great guy

Great video team! Given a bit more tweaking and performance upgrading hopefully we may see Z3 VS Phil on track at some point? Keep up the exceptional work!

Bruno seems to be a really nice lad, would be nice to see him again on the channel. And well done Ethan for the wrenching 💪

Oh shit I just now realised I saw bruno first in LLF video with his 116i lol

Great video! I love Bruno’s comment re: just looking at peak number gains. It’s all about the gains on the curve, and also percentage of gains (this was nearly a 10% power gain), and relative to power-to-weight as well.

It's finally back! And I'm really proud of Ethan. He's come a long way since he started.

"I think it's time we get to bed, it's crazy late" Me watching at 2am: 😲

that torque bump at 4k rpm is gonna feel lovely, nicely done. Would like to see the differences between the stock and custom plenums

Brunos smile at the end!! Top bloke

For anyone struggling to understand what is happening: Cam Timing - The BMW M42/4 engines have adjustable timing gears. The intake cam has been advanced, probably ~5 degrees. Any mechanic can do this for you if you ask and was part of a regular service bulletin with the cars. Throttle Body: The TB is a dual-stage to improve partial load response. As the volume behind the TB hasn't changed and neither has the diameter of the TB this will have no effect. Manifold: Bruno has cut the area behind the TB to try and improve flow. This is a misunderstanding of the design of the original part. Tune: This is where all the change in power has come from and is typical for these cars. Filter: This has removed the helmholtz resonator on the original intake which why you can hear the 'squeak'

I think you guys need to buy Bruno some new lighting for the workshop! Excellent video, really enjoying watching Ethan learn all these things.

Wait! The tuner - is that the guy with the 240 hp n/a 116i?

My favourite line from Ethan: That's the "Main engine pipe". 😄😄😄 "Sir, I'm afraid it's bad news. Your main engine pipe has gone".

9:50 he was so proud of that joke, more bruno pls

bruno is comedy gold, hes on my level. my type of guy. And clearly on your level too. love seeing the videos guys. youre getting close to clarkson may and hammond in terms of famousnesesessss but much better content than they make.

He is doing such a great job! I love how he plays his role and really sticks to it to a point where you barely notice it, when he actually forces it.

So pleased you’ve continued with this

Whilst taking the piss out of Ethan is fun an' all, can we just take a moment to appreciate the progression from 'losing an Allen key down a spark plug hole' to 'wrenching and bleeding on own project car' in a little over a year? Yes, there is still some mechanical sympathy and confidence to come with practice, but good on you Ethan!

Ethan looks so genuinely pleased when he says "I've taken engine apart". Keep it up boys

Reminds me of my early days. I was so proud when I replaced the washer fluid pump on my old Volvo.. 😄

love the 306 in the background, rareish colour as well

14:33 Camber and Combustion's 306 gti-6 casually making a cameo 👀

Really enjoyed the videos in this series, Bruno is an excellent on screen presence. So, when is the Ethan taking the Z3 on track?

Ethan’s willingness to share his vast knowledge is inspiring.

Dude, Ethan’s camera shyness is decreasing and his car knowledge is increasing. This I what everyone needed.

The fine camber and combustion pug in the shot to! WIN 🏆

Another superb episode from a fantastic series! Loving it keep up all the hard work YOU’RE doing Ethan!

Bruno is fantastic, knows his stuff, relaxed and naturally funny. Loved this vid.

You guys really really need to keep doing this series🙏🏼🙏🏼🙏🏼

On behalf of all the viewers, I would just like to saw how proud we are of you Ethan for finally almost remembering everything youre gonna do to the car today

Alex really makes it run, but Ethan.. he's the cherry on top of the cake!

Ah yes its always a great day when Ethan works on a engine👹

This series is one of the very best in the automotive youtube. 😎 The Z3 is a solid and easy to work on first project car, so a great choice from the advisors 👌🏻

"I've taken apart an engine"....as he removes the throttle body :D brilliant !

I like Bruno. Good addition to the series

Definitely time for a 944 vs z3 challenge video

Bruno is the man and well done Ethan for getting stuck in.

legit - genuine proud of ethan

Bruno is such a nice guy and great mechanic keep up these vids 👍🏾

Been a fan of the Z3 since Need For Speed High Stakes. I like that Ethan got to change the wheels to these ones. This Z3 has a modest tune and a modest look to it so far. I like it.

I love how Ethan goes full beans when loosening something but doesn't stop. No stopping Ethan's beans.

Love Ethan and how far he has come

Watching Ethan work on a car is making me look forward to getting a project of my own

Great video, I looked at the 1.9 Z3 for the channel, ended up with a 2.5 Z4. Been fixing bits on it ever since! 😂

That Mike Brewer joke had me.

I'd just like to call attention to the pug in the background with the S333 NDD numberplate. That plate is glorious.

Mike brewer part was just perfect 😂

Ethan working on his Z4 is one of the best series on this channel 💪🏻🔥

So much love for an M42/M44 engined beamer

I just love how Bruno looks completely uninterested in life, but my god he's brilliant 🤣

this is the best series on KZfaq ever, never let it end!!!

Can we start a petition to help get Bruno better lights in his workshop

Guys these episode with you all in are just top tier and I’m so here for them. I love it. Yous are amazing

If there's an episode of Ethan getting driver coaching on track I will declare this my favorite Car Throttle series.

Love the BMW series on carthrottle, Ethan makes it even better

I got a bit nervous with that wheel teetering on the bush. Go Ethan!

Wheels and tyres are probably my favorite mods. You can improve the looks and add some performance by doing so 👍🏾

Love that this is just like a bunch of mates that no one knows why they hang out together but it just works…

Ethan is so lucky to be able to teach Bruno! I hope I can take my Ti to BDS shop someday!

Its honestly like bruno is Ethan's dad and he's helping his son fix his car hahah

I feel like i've been waiting for a project Z3 video for ages

Ooooh yes, been waiting for the next part soo long