[L27]

Originally Posted by teaston

Looks like it could be producing a fair bit more than the claimed 340hp then!

340 in the European version, but the US Z4 M40i has 382 hp

[M3 Adjuster]

Originally Posted by Joe240

382hp 365tq at the crank is what it's rated at. .

Originally Posted by L27

340 in the European version, but the US Z4 M40i has 382 hp

Originally Posted by ynguldyn

This is the US version which is spec'ed at 50hp more than the puny European one.

Originally Posted by teaston

What the hell!?

Is this very late payback for the E36 M3?

actually.... in a sense... yes..

Back in the days of the E30 M3.. the US got less hp because we had the catalyzed E30 M3 exhaust.
With the E36 M3.. the US got a Single throttle body model.. not the 6 individual Throttle bodies..

(Back then... a car needed " M throttle bodies" to really be an M car... (HEHEHE ... I kid for those actually old enough to understand this.... but seriously.. the US E36 M3 versions were called 330is (1995) and 332is (1996-1999) by many original M fans.... due to the lack of ITBs.)

Now that Europe has stricter emissions than the US.. the shoe is on the other foot and we get the higher rated versions now.. but at least all cars get " M mirrors..."

Originally Posted by PrionFawkes

Head over stateside mate, we get the tasty versions now.

[GGG333]

This car must be stupid fast

[nullspace]

I know I'm being pedantic, but a 15% loss with 373.5 WHP would be 439 at the crank.

I suspect people are multiplying by 1.15, but that's incorrect. You have to divide by .85 since the 15% figure relates to the original crank value, not the WHP.

[Steve_335d]

So when the UK is finally out of the EU, BMW will be putting an extra 50hp on all of our cars!?!

That's reason enough to leave right there

[Joe240]

Originally Posted by nullspace

I know I'm being pedantic, but a 15% loss with 373.5 WHP would be 439 at the crank.

I suspect people are multiplying by 1.15, but that's incorrect. You have to divide by .85 since the 15% figure relates to the original crank value, not the WHP.

The 373hp run I would look at as abnormal because of heat soak. Gained hp, loss tq so assuming the engine compensated by pulling timing and dropping boost to generate less heat runs 1 and 3 were after a 10 minute cool down so it showed a more regular power and tq curve IMO. But I’m not 100% familiar with how BMW programming works to counter heat soak

[moff]

Originally Posted by L27

340 in the European version, but the US Z4 M40i has 382 hp

This is only with the Z4 M40i

The M340i has 374hp - still down a few horses. I've no idea why the UK / Euro Z4M has such low power over here - it's not emissions related.

For info the X3 M40i has 360hp - so basically B58 + MPPSK

[PrionFawkes]

@Joe240 congrats on making it to Jalopnik's front page.

[Joe240]

Originally Posted by PrionFawkes

@Joe240 congrats on making it to Jalopnik's front page.

Dang I had no idea! Thanks for pointing this out! I’ve been super busy at work

[DPelletier]

It would be even cooler if Jalopnik made sense; they used the average rather than the best pull and called it 368whp which they somehow equate to " the Z4's power rating of 382 HP at the crank is probably fairly accurate, accounting for driveline losses." Huh? ......sounds like they believe the driveline losses on the Z4 are 4%? Using a more reasonable 10-15% the real BHP caculated from the avg rather than best pull would be 410 to 420hp.....meaning that the engine is underrated by at least 28hp

Dave

[F87EVO]

I think the og m2 is understated as well the m3/4 ??

[DPelletier]

This article makes more sense so I'll just leave it here...:-)

https://www.motor1.com/news/355876/2...-z4-dyno-test/


Cheers,
Dave

[Brake_Late]

Grabbed these spy shots this morning at corporate HQ parking lot before security rolled thru with " a look " in an X6m. Haha Enjoy.

PS- the car looked very capable and cool but I have to say ... looking at the brakes ... I was sort of shocked and definitely disappointed by what I saw for such a performance oriented car - these brakes look like they came from the 80s.

[DPelletier]

Originally Posted by Brake_Late

.. looking at the brakes ... I was sort of shocked and definitely disappointed by what I saw for such a performance oriented car - these brakes look like they came from the 80s.

From Motor Trend: The 2020 Toyota Supra comes standard with 13.7-inch ventilated steel brake rotors up front, which are clamped down by large four-piston calipers. In back, there are single-piston floating calipers. Brembo is a reputable supplier of high-performance brake systems, so seeing Brembos on the Supra is no surprise. What is surprising to me is that, for some reason, the calipers were left unbranded. If I were a Supra owner, I'd want to show off my beefy stock brakes with Brembo-stamped calipers at every possible opportunity.

and: Brembo 13.7-inch front brakes with 4-piston calipers arrest the speed, no matter how fast the Supra is going. The only performance option is larger rear brakes; 13.0-inch rotors are standard, while 13.6-inch rotors are optional and both are clamped down upon by single, floating calipers.

It’s the end of a 5-hour track day and the brakes have never faded and the car has remained stable even under the heaviest braking. I expected it to bobble during braking given its short wheelbase.

...and another; The stamina of the engine pushes the car past 100 miles per hour on Summit Point's shortened back straight (in this case due to cones), but the big four-piston Brembo brake calipers and 13.7-inch rotors provide ample stopping power.

IIRC, I saw a 60-0 distance of 97 ft......for comparison, the 15" "superperformance" brakes on my Jaguar F type were good for 103 ft.

It would appear the brakes work well..... so now about the HP on the Z4...

Dave

[Brake_Late]

Those brakes are whack. Period.

[DPelletier]

Originally Posted by Brake_Late

Those brakes are whack. Period.

Sorry is "whack" good or bad?

Cheers,
Dave

[Brake_Late]

Originally Posted by DPelletier

Sorry is "whack" good or bad?

Cheers,
Dave

Haha. I was thinking bad. They looked like brakes from at least as far back as maybe 2014 !? But, now I realize why... lol since I don't follow these type of cars ever or much... I didn't even realize that this is a Toyota ! So, since realizing this ... I now know why the brakes look so caveman.

[hans007]

Originally Posted by nullspace

I know I'm being pedantic, but a 15% loss with 373.5 WHP would be 439 at the crank.

I suspect people are multiplying by 1.15, but that's incorrect. You have to divide by .85 since the 15% figure relates to the original crank value, not the WHP.

Originally Posted by nullspace

I know I'm being pedantic, but a 15% loss with 373.5 WHP would be 439 at the crank.

I suspect people are multiplying by 1.15, but that's incorrect. You have to divide by .85 since the 15% figure relates to the original crank value, not the WHP.

the 15% number is always bandied about as what it is , but probably inaccurate these days as transmissions are more efficient. they all have lock up clutches etc. I am not sure what the real number would but that rule of thumb 15% is probably not an accurate rule of thumb these days

[DPelletier]

Originally Posted by Who's on first

Modern cars don't have a 15% drivetrain loss.

10% is more realistic.

Maybe so....I suspect the real drivetrain loss is between those two numbers but even at 10%, that means crank hp of the "382hp" version is 415hp. Sounds good to me.

Dave

[barryv@ridings.co.uk]

Originally Posted by pookgai

The EU version has extra emission equipment that lowers the HP output

Can the uk car have the restriction removed simply to match the us spec at 382bhp
I have a uk M40i and would to boost the hp to 382 without adding aftermarket kit or chips

[Joe240]

Originally Posted by barryv@ridings.co.uk

Can the uk car have the restriction removed simply to match the us spec at 382bhp
I have a uk M40i and would to boost the hp to 382 without adding aftermarket kit or chips

Only way to switch it would be to remove the particulate filter and then flash the ECU.

[barryv@ridings.co.uk]

Does anyone know if a uk M40i can be simply upgraded or re specced to match the US spec 382 bhp