VOTE: Turbo!

VOTE: Supercharged!

VOTE: ITB!

​@@carwowyo

Itb

He did say hello mat 5times in a row 😂

Sure

😂😂 I was gonna say the same

​@@purwantiallan5089Yeah but he was loosing in other ones and won in the last one thats why it was hilarious😂

Nick should have pulled out some binoculars as his secret weapon on keeping up. Thr stock cat did ratner well imo.

Nick absolutely knows how to enjoy it for what it is .. Sam is great as well.

He's annoying as fk wheres manni now he's a proper dude

you must be white

Can't chuffing stand him.

Haha, this is about the most British response ever (Ps, I don't like him either) @@jimmymcgoo8641

Not really how that works. Downshifting doesn't magically provide you with more tyre grip. Even worse, dispite the abs the tyres are locking up for very small amounts of time during this braking test which would stall the engine upsetting the balance and reducing brake pressure. I am pretty sure he was downshifting out of habit but not actually engaging the clutch. His heel and toe was impressive tho.

😅😂😅😂

​​@@dutchdrifter8740he was searching for the grip limit not trusting the abs system. There is a delay between the brake release and re-engage so probably he was feathering the clutch to feel where the limit was.

​@@dutchdrifter8740probably referring to engine braking, don't know the detail but it's an alternate way to slow down your vehicle and reduce the amount of wear and tear on your braking system.

Not to keep hitting you over the head, but you are incorrect as others have pointed out. The downshifting is not increasing the ability of the tires to stop.

You can see that Matt was the only one who did not use engine braking (downshifting) to help with slowing down. All the other three used the shifter to help with the braking.

Which means they effectively will stop shorter than stock brakes after the initial heat soak. People underestimate how little it takes to get hot brakes. One or two curves with hard braking is all you need to lose braking performance.

​@@mediocreman2the safety norms requires that brakes have to withstand 100-0 stop with full force at least three times. And 99,999999999% you don't brake with full force. And if you do, you're driving like maniac on public roads. Thus you shouldn't even stand near any car... If you go on track days it's whole different story.

@@crocknyldcrock1931 yeah, probably a good chance it had something to do with brake bias (engine braking the rear wheels if they still have traction left after the front starts to lock up)

Exactly abs is doing the work every size brake is good enough to lock up the tires. What does help significantly with brakes is tires, because stickier tires they dont lock up as easy due to more grip so abs kicks in later. They shoulda really checked tires for this test, width, model, psi it makes a massive difference in all these test except the rolling race

The breaking test was the best one ehehhe!

Hello Nick is always savage.😂

Karma says hello matt

Coco Hayashi also says "Hello Mat" like 5 times.

Absolutely perfect.

Agree my NC3.5 with Yokohama’s on Oz Omnia’s with Meisterr Sportives, new calipers with braided hoses and Cobra back box is so much fun on B roads. Supercharger would be nice but can’t justify the £6000 spend

BBR knows how to deliver all the goods.

So tempted to take my ND there

@@afc85 Treat yourself, put an even bigger smile on your face. You only live once.

do it@@afc85

@@afc85 just do it yourself way cheaper

True.😂

The hello Matt at the end was funny as hell 😅😅😅

Really?! Ehh I guess. Nick has been slowly getting more and more annoying.

I was told I didn't know what I was doing.

Always iconic.

Eh it was ok. It was ok the first couple times but after he started getting a little annoying.

Yes, it was surprising there was no car with the Eaton M45 blower. I thought that was a common supercharger to install on those cars.

Would be interesting to compare all 3 common types of superchargers running same max psi target.

MX-5 should get a new challenger now. The MX5 Touring Car.

Its overpriced unfortunately

Carwow just keeps on getting better.

not everyone, speak for yourself. i’m personally getting sick and tired of these unnecessary tuned drag races😒

​​@@MaSandii30I don't care either way but considering how few cars on the road actually get modified there's definitely too much YT content on the subject.

​@@samuelgarrod8327a huge number of cars on UK roads are modified. The car tuning industry is worth a stupid amount of money in the UK alone

How does it sound?

True. What about a battle between Shioriko Mifune's Mazda 787B (Rotary Turbo) against the GT90 (Supercharged).

yeh agreed, a big reminder of power curves and delivery.... saying a hp number isnt the whole story

@@purwantiallan5089 bro there's like 1 787b in the world... idk how theyd get it here for a drag race

I had the same thought

I was hoping! Id bet he’d have a chance of winning!

Agreed, I think swapping the drivers would have been fairer, however the comparison between Turbo & Super is pretty much in line with what I'd expect. There's a reason why its called "Turbo lag".

@samrowlands7842 he isn't launching it right. He's pulling away with the revs droppings. He needs to launch with high revs. People need to learn how to drive a turbo car. Lag is not a thing if you know what you're doing.

@@rpw2003hmmm, not sure about that one!!!! People always get confused on this . There’s a difference between lag and boost threshold. Lag is the time it takes for the turbine to spin up and tbh, unless you have a HUGE turbo is pretty minimal. Boost threshold is the minimum rpm your setup will make boost. So yep, keeping the revs up keeps you above the threshold, but makes bugger all difference to lag.

Thanks.

This type of supercharger (Rotrex) don't make torque down low, its more like a N/A on steroid. You get almost the same hp as a turbo setup but without the huge burst of torque..its linear. Less harsh on the rods and great for time attack, lapping, circuit. Turbo is better in straight line for sure (more power/torque) if you can put the power to the ground..! Different breed of animal. Btw I would love to see the ITB car with a 6 speed gearboxes instead of the 5 .

@@benjbsn2429 Good explanation, also you can probably size your turbo by knowing how to read A/R compressor maps to see where the turbo range is and properly size the turbo compressor and turbine to fit your needs. Smaller A/R on a the turbine side will give you more restriction but could help in spooling the turbo at lower rpm's with some sacrifice up high. Properly sized turbos can have some good grunt with decent boost pressure down low and still put out enough steam up top. I would think that is the main issue that a lot of people have with laggy turbo's that don't spool quick enough and only have lets say a 2500 rpm useable power band. Roots style superchargers make a crap ton of boost down low right off of idle which makes the engine feel like a bigger displacement and centrifugal superchargers build boost depending on rpm. Centrifugal superchargers will always move more air than a roots due to their more advanced compressor wheel design vs the old style three lobe rotors in a roots. There is the exception of the screw supercharger which can build far more boost due to the lobe screw design which has a more aggressive profile than a lobe design and the closer tolerances to the case.

also superchargers are better

@@harrygregory6227 oof arguable! But I’ll let it slide lol. Really a proper roots would be cool

Are you rooting for it?

@@harrygregory6227 you should be ashamed

I meant it as a pun. get it "roots"-ing for it?

It is a Great Car i owned a Mark 2 and sold it only for my Kids to get a Family Car.

​@@lennartschmidt5385definitely.

@@lennartschmidt5385you were supposed to sell the kids

Me too never stop laughing cuz of this.

He has a character that needs fixing but ok

Idk if it's just habit but it definitely doesn't help in a break test

​@@mitchellsteindlerit definitely does

@@Lewis1995 with weak brakes. In this case it interfered ABS`s job

@Lewis1995 all it does is put more load through the tires, which does nothing when you're already in abs.

@@mitchellsteindler no

Mazda 3 mps wins all day long

Oh hell ya. I completely forgot about the Mazda Speed variants. They made awesome cars. And not just the Mazda speed Miatas but also the Mazda Speed 3. And even rarer and cooler are the Mazda Speed 6s. Do you remember them? They were awesome and rare. I almost never saw them even when they were new. Same as the 2004 and 2005 Volvo S60R and V70R with the awesome looking ball shifter and those amazing seats. I had an 06 Volvo S60 2.5t (which replaced the T5 and made around the same HP). Mine had the tiptronic auto. Either way, it was an awesome car and made cool sounds from the turbo.

​@mesco8200 interesting opinion there buddy

Put Sam into Roadster Touring Car.

Definitely. It has double the fun.

Thats cool.

Had one too, great little engine that didn't feel like such a small capacity at all. I get that production costs don't really make twincharger setups viable anymore but it was indeed the best of both worlds. All the mid range when both the sc and turbo were engaged and still pulled all the way to 7k rpm after decoupling the sc.

I have a 1.4 t-jet with 150hp and almost has the same snappiness as 1.4 twincharged tsi in midrange but feels sluggish at top-end

Well they got 3.0L Supercharged engine applied to it.

What about Mazda Roadster MX-5 TOURING CAR?

It's engine-swapped too, with a cammed 2.5.

I thought he jumped the start a few times too

​@@monkey11477doesn't he do that every time he participates in a drag race? 😂

Yep. It is also epic

I think it's the driver. I think the turbo car is faster overall, but its being held back by bad launching as it wins everything but the first two races.

@@ii_dynasty Your comment has zero to do with what the OP said. He said nothing about the turbo car, he was only talking about the last race where driver was a non-factor and he is 100% right that the ITB car was faster than the supercharged car in top gear because of the different gearboxes.

I think the last race was also cos the ITB was a 2.5L so makes more power while nobody has boost

This mazda had a centrifugal supercharger. This type of supercharger doesen't make much power at low rpms, whilest turbos also have bad really low end torqe but but at around 2-3k rpm most turbos start building boost and reach full boost at around 3k rpm which gives them really good mid range torque whilest the centrifugal supercharger reaches peak boost only just before the rev limit.

@@Bally46 It does make some power at low rpm where the others are not on boost, true. But the point is they would be comfortably on boost if they had the 5-speed gearbox like the ITB car. They mentioned the 6-speed cars were at 1800 rpm at 50 mph. The 5-speed would be above 2500 rpm (I have one). If they were all 6-speed then maaaybe the ITB would still very slightly edge the sc. If they were all 5-speed, the sc would leave it the dust like in the 2 previous races. The turbo wins every roll race hands down, no change here.

Agree. Wish Mazdaspeed3 also has that.

It performes better than standard, but NA tuning is just a game of small expensive gains.

All about the torque.

And also epic.

Wish Citroen C4 WRC also had 2.5L.

Well definitely.

I'd say there may be a problem with suppling brake pump with pressure because of the ITB's

Trust me cheapest bang for buck and upgrades r reasonably cheap

They are surprisingly fun and are extremely involving. But everyone is different

Agree.

Naturally aspirated might not be the cheapest way to make power but its definitely worth it

Not really in this case, only positive displacement superchargers provide improvement in power on low RPMs. Here they used centrifugal supercharger which is belt driven and has turbine like a turbocharger. That means more RPM you have, more boost it makes. On low RPM it can be even a disadvantage to naturally aspirated engine because it creates load on the engine and doesn't make much boost, which explains last race.

Supercharger for me

@@5ohh112 Makes sense also. Don't really know if there is a universal right choice when it comes to these 2.

Parasitic loss is not a problem so long as it's a net gain

⁠@@post-leftludditeit can be a problem because there is more wear, the engine needing to exceed the power and torque at the crank by a lot.

I wonder what the difference between a 2.0 and 2.5with itbs is because 240bhp Is only 20 more than than the off the shelf Bbr 220, all that extra must come from the 2.5 block

Bro. Supercharger to no parasitic losses. Fast acc and reliability. Turbo suck

@@post-leftluddite You can see the parasitic loss here: 9:35 The engine is suffering to rev, just like a heavy flywheel.