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      09-30-2020, 08:38 AM   #23
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Quote:
Originally Posted by CanAutM3 View Post
A few more data points, AMS weighed their loaded M4C LCI at 1,644kg (3,624lbs) and Autobild their M4cs at 1,602kg (3,532lb), whicj yileds the following power-to-weight ratios:
  • 0.1296 G82 M4C DCT
  • 0.1225 F82 M4C DCT
  • 0.1283 F82 M4cs DCT

So given these data points, the G82C has a 5.7% advantage over the F82C and 1.0% over the M4cs, while the F82 M4cs has a 4.7% advantage over the F82 M4C. A 5.7% advantage is nothing to skuf at, but 1.0% is not enough to entice me to move.
From a CS I think you'll need the next CS to get that power to weight advantage. But no matter, I know what you're going to do regardless
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      09-30-2020, 11:07 AM   #24
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Quote:
Originally Posted by schnell325 View Post
But we can't tune the S58 in the G8x ....
Quote:
Originally Posted by schnell325 View Post
But we can't tune the S58 in the G8x ....
Why not????
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      09-30-2020, 11:19 AM   #25
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Originally Posted by whatnotsomuchf80 View Post
Why not????
Not sure it even needs it. The S58 pushes almost 500 WHP stock meaning it’s making way more than 510 hp. It’s going to be a low to mid 11 second car and more than fast enough. My biggest concern is still how the weight, added size and wheelbase translates to handling. Straight line will not be an issue.
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      09-30-2020, 12:05 PM   #26
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Quote:
Originally Posted by whatnotsomuchf80 View Post
Why not????
There's a thread started by ECUTek in the F8X section that says they've hit a wall with the new ECUs. To the point that benchflashing is also not possible.
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      09-30-2020, 12:17 PM   #27
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Quote:
Originally Posted by SYT_Shadow View Post
Quote:
Originally Posted by whatnotsomuchf80 View Post
Why not????
There's a thread started by ECUTek in the F8X section that says they've hit a wall with the new ECUs. To the point that benchflashing is also not possible.
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Originally Posted by SYT_Shadow View Post
Quote:
Originally Posted by whatnotsomuchf80 View Post
Why not????
There's a thread started by ECUTek in the F8X section that says they've hit a wall with the new ECUs. To the point that benchflashing is also not possible.
But people are flash tuning S58 X3M's already???
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      09-30-2020, 12:24 PM   #28
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Quote:
Originally Posted by SYT_Shadow View Post
There's a thread started by ECUTek in the F8X section that says they've hit a wall with the new ECUs. To the point that benchflashing is also not possible.
Meh... That's the game manufacturers and tuners have been playing ever since the OBD port was introduced.
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      09-30-2020, 12:25 PM   #29
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Meh... That's the game manufacturers and tuners have been playing ever since the OBD port was introduced.
I also have hope they will eventually crack it, but when ECUtek talks I listen
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      09-30-2020, 12:30 PM   #30
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Quote:
Originally Posted by whatnotsomuchf80 View Post
But people are flash tuning S58 X3M's already???
Oh yes.

Not OBD2 flashing (IIRC) but they're pulling the ECU and bench flashing them.

That's how you get those beautiful tuned power curves the S58 is showing off.

Here's the thread discussing the ECU lock issue
https://f80.bimmerpost.com/forums/sh....php?t=1760919

Here's a stage 1 dyno

Stage 1 (91-93) vs Stock
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      10-07-2020, 12:58 PM   #31
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Here's my estimate for curb weight of the G83. Does this look right?

M4 3,880
xDrive 130
Vert 340

Total Curb Weight 4,350!
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      10-07-2020, 01:19 PM   #32
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Quote:
Originally Posted by jimbethesda View Post
Here's my estimate for curb weight of the G83. Does this look right?

M4 3,880
xDrive 130
Vert 340

Total Curb Weight 4,350!
If the German numbers of 185kg/400 lbs weight increase from the F82 is true the M4 will weigh over 4000 lbs and the vert. will push 4500...
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      10-07-2020, 01:44 PM   #33
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Quote:
Originally Posted by solstice View Post
Quote:
Originally Posted by jimbethesda View Post
Here's my estimate for curb weight of the G83. Does this look right?

M4 3,880
xDrive 130
Vert 340

Total Curb Weight 4,350!
If the German numbers of 185kg/400 lbs weight increase from the F82 is true the M4 will weigh over 4000 lbs and the vert. will push 4500...
I'm not sure I understand. The U.S. specs are out. M4 comp is 3,880. Trying to guess how much xDrive and the vert will add
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      10-07-2020, 02:07 PM   #34
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Originally Posted by jimbethesda View Post
I'm not sure I understand. The U.S. specs are out. M4 comp is 3,880. Trying to guess how much xDrive and the vert will add
Yes but when I used the US G82 and F82 weight in this thread people pointed out that they don’t match the German increase. Using the US numbers the difference is 200 lbs to the F82 while using the European numbers the difference is 400 lbs. which is true? I don’t know.
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      10-07-2020, 02:37 PM   #35
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Quote:
Originally Posted by solstice View Post
Using the US numbers the difference is 200 lbs to the F82 while using the European numbers the difference is 400 lbs. which is true? I don’t know.
Probably somewhere in between
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      10-07-2020, 03:22 PM   #36
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Quote:
Originally Posted by CanAutM3 View Post
Probably somewhere in between
I’m inclined to think it’s one or the other, not in between. Either a) the US number is not the US regulation weighed number but a translation of a German number or b) the German number is inflated vs the F82 due to loopholes or changes in EU regulations.
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      10-07-2020, 03:50 PM   #37
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It's a good question solstice

I only use euro numbers because they have legal implications and that way I also avoid stupidities like the F8X weighing 3350lb.

The euro rules may have changed so the ~350lb difference may be smaller in reality. I look forward to people weighing theirs.

It would be really awesome if it were not much heavier in a spartan spec
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      10-10-2020, 01:30 AM   #38
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Quote:
Originally Posted by Avaley View Post


better yet Supra GRMN S58 with the 7DCT...would pay over sticker for one of the 200 that will be made...
I would only pay over sticker if Supra GRMN S58 with 6MT
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      10-10-2020, 02:08 AM   #39
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Quote:
Originally Posted by Mdoa View Post
I would only pay over sticker if Supra GRMN S58 with 6MT
Rumors are bmw reluctantly handed over only the 7dct for this variant. Only 200 planned

https://bestcarweb.jp/news/scoop/171830?mode=full

Last edited by Avaley; 10-12-2020 at 10:27 PM..
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      10-12-2020, 07:29 PM   #40
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Originally Posted by Avaley View Post
Rumors are bmw reluctantly handed over only the 7dct for this variant. Only 200 planned
I think there is another rumor saying that BMW will provide S55 instead of S58?
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      10-12-2020, 09:30 PM   #41
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rewatched the carwow video and at 11:30 mark, Mat talked about 50-70mph time being 1 full second quicker than F8X, now that's a huge deal

I'm not sure what methodology that time is based off of, but I pulled up C&D tests for F82 ZCP and F82 CS, their 50-70 time are 2.9s and and 2.7s respectively... is this really gonna be 1s quicker than that still, that's Huracan Evo level in-gear shove

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      10-12-2020, 09:35 PM   #42
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Originally Posted by Mdoa View Post
I think there is another rumor saying that BMW will provide S55 instead of S58?
All we got are rumors, but I doubt it based on what JDM magazines and japanese car forums are saying.

I highly doubt they would put a B48/B58 into the 2.0L and 3.0L versions of the current Supra, then go back for a S55....doesn't make any commercial or mechanical sense.

Last edited by Avaley; 10-12-2020 at 10:28 PM..
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      10-12-2020, 09:37 PM   #43
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Quote:
Originally Posted by DecemberStorm View Post
rewatched the carwow video and at 11:30 mark, Mat talked about 50-70mph time being 1 full second quicker than F8X, now that's a huge deal

I'm not sure what methodology that time is based off of, but I pulled up C&D tests for F82 ZCP and F82 CS, their 50-70 time are 2.9s and and 2.7s respectively... is this really gonna be 1s quicker than that still, that's Huracan Evo level in-gear shove

I think people aren't talking enough about the power and capabilities of the S58 engine and i'm inclined to trust Mat on this one.....huge if true.
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      10-12-2020, 11:18 PM   #44
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Quote:
Originally Posted by Avaley View Post
I think people aren't talking enough about the power and capabilities of the S58 engine and i'm inclined to trust Mat on this one.....huge if true.
Thats also going to be a gearing thing I think, the S55 + 7DCT setup will be between 2nd and 3rd gear at that speed while it is right near the top of 3rd with the 8AT
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