06-18-2019, 08:27 PM | #24 | |
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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..." Last edited by M3 Adjuster; 06-18-2019 at 08:35 PM.. |
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06-18-2019, 08:40 PM | #26 |
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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. |
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06-19-2019, 04:00 AM | #28 |
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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
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06-19-2019, 10:18 AM | #29 | |
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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
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06-19-2019, 02:30 PM | #32 |
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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
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06-20-2019, 03:14 PM | #33 |
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I think the og m2 is understated as well the m3/4 ??
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06-25-2019, 03:29 PM | #34 |
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This article makes more sense so I'll just leave it here...:-)
https://www.motor1.com/news/355876/2...-z4-dyno-test/ Cheers, Dave |
07-04-2019, 02:54 PM | #35 |
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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.
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07-04-2019, 03:46 PM | #36 | |
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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 |
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07-04-2019, 03:57 PM | #37 |
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Those brakes are whack. Period.
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07-04-2019, 04:19 PM | #39 |
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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.
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07-05-2019, 08:53 PM | #40 | |
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07-07-2019, 12:14 PM | #41 |
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07-28-2019, 05:44 PM | #42 | |
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I have a uk M40i and would to boost the hp to 382 without adding aftermarket kit or chips |
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07-28-2019, 05:48 PM | #43 |
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Only way to switch it would be to remove the particulate filter and then flash the ECU.
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