07-07-2019, 11:52 AM | #23 | |
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07-07-2019, 01:36 PM | #25 | |
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BMW and Toyota laid it out bare - the Supra and Z4, despite sharing components, are different cars and should perform differently on the road. But nope, everyone kept saying they're the same car, rebadged this and that. So I am not sure why people are making comments about Toyota "outdid" BMW. They are configured differently for different purposes and their reported Nurburgring times should have hinted that (7:40 vs. 7:55) instead having to watch this comparison which only proves what BMW and Toyota have said all along. Two different cars for different purposes/audience. Last edited by TheBingoBalls; 07-07-2019 at 02:23 PM.. |
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07-07-2019, 02:59 PM | #26 | |
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07-07-2019, 03:07 PM | #27 |
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It's pretty obvious that the Supra is packing more heat than advertised as it's considerably faster than a Z4 in a straight line as proven by CarWow.
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07-07-2019, 07:37 PM | #28 |
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Euro M2 Comp runs more boost(.2 bar) to compensate for the particulate filters.
Last edited by hellrotm; 07-07-2019 at 07:43 PM.. |
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07-07-2019, 08:30 PM | #29 | |
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We know that the Supra's BMW engine puts out 339rwhp. We know the NA M40i's engine puts out 373rwhp and based on this drag test, the euro Z4 has to be putting out a fair chunk less than the Supra. 5/10's in the quarter is significant and the only way the Supra could accomplish that is with more power, which can only mean a better tune in this case. Odd, I would have thought BMW would have provided the identical tune in both the Supra and Euro Z4's B58B30M1 engines.....clearly not. Dave |
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07-08-2019, 11:25 AM | #30 |
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I'm not surprised the Supra is faster but it should be closer. I wonder why BMW doesn't use a similar tune so the M40i can show better against a Boxter.
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07-08-2019, 02:08 PM | #31 |
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07-09-2019, 12:48 PM | #32 | |
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Correct, the only differences is the particulate filter. Last edited by supra93; 07-09-2019 at 01:02 PM.. |
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07-09-2019, 01:49 PM | #34 |
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The Supra is rated at 335hp regardless of whether or not it's sold in North America or Europe. The Z4 M40i gets a different and more powerful 382 (rated) hp motor in North America therefore the Supra appears to be faster and more powerful than the European Z4 M40i but it hasn't been run against the faster North American M40i which uses a different engine - B58B30O1. Based on the dyno results (https://g29.bimmerpost.com/forums/sh....php?t=1621271) for both the Supra and the North American Z4 M40i, it would seem than the North American Z4 M40i has a significant power advantage over the Supra which would imply a different drag race result than the one CarWow posted.
...that's about as clear as I can get. Cheers, Dave |
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07-09-2019, 07:51 PM | #35 |
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This article tells you all the differences in the B58 US vs Euro spec. It's not just the exhaust.
https://www.google.com/amp/s/www.roa...mw-z4-engines/ |
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07-09-2019, 08:23 PM | #36 | |
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07-09-2019, 09:18 PM | #37 | |
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07-16-2019, 01:45 PM | #38 |
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If anyone knows someone with a Supra on order (apparently Toyota isn't allowing delivery until the 22nd), send them my way. I'd love to do a side by side comparison. I also just put my B58 JB4 on the car and very curious if it will help the Supra in any way (only way to tell is to wire it up). If it works, be a nice jumpstart for these cars since BMW apparently upgraded security and BM3 doesn't work on them at the moment.
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07-16-2019, 04:33 PM | #39 |
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How does it feel with the JB4?
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07-16-2019, 05:51 PM | #40 |
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Still working out some bugs. The settings it came with (when originally purchased in 2016) I guess are obsolete for the B58? Working with support at the moment. Dyno showed a tad less hp and a tad more tq so I’m assuming no change, even when put on map2. However, it was put on at the dyno so not sure if there’s any adaption time for the ecu or not. Put it back on this morning for troubleshooting. Original settings seemed a jumpy (power wasn’t consistent throughout the powerband, would have some small blips during acceleration). Fixed the settings and it feels more linear now.
It’s difficult to really say because the car was quick before. My butt dyno says yea there’s a little more there. My mind says not really. Map2 is only +3 PSI so not a huge gain. Terry is reviewing things at the moment, but without doing some comparison logs between maps, probably on the dyno, it’s difficult to say. He mentioned timing is down, IAT is up. Which I did notice the IAT runs 110-120F even when cruising at 75mph down the highway. My M240i would only hit that when at rest, cruising would be high 90s at speed, 110ish at rest (more noticeable when the CAI was on). But I have faith that Terry and Ando at Burger will get it figured out. I’m curious after driving on it for a day if it is making more power now |
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07-31-2019, 01:50 PM | #41 |
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Another comparison vid.
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08-01-2019, 05:41 PM | #42 |
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The Carwow vid shows the Supra doing the 1/4 mile in 12 secs and it's the lower powered UK version.
Carwow tested an M3 CS and RS4 at 12.1 seconds so I don't get how the Supra is doing that.
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08-01-2019, 07:01 PM | #43 |
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Toyota is under reporting the hp figure. On a dyno, the actual output is around 400 hp.
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08-01-2019, 10:57 PM | #44 |
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One tuner in the U.S. just did some real world testing in the new Supra and it ran mid 12’s at 111 which is basically what most magazines said vs. this one anomalous test where it ran a 12.0.
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