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      07-29-2019, 12:10 PM   #1
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IND F97 X3M Competition Baseline Dyno - Stock

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The all-new F97 X3M is the welcomed newcomer amongst BMW’s M garage, not only as the upper crust of the X3 lineup, but certainly because of what’s under the hood—the S58 engine. Rated at 473 horsepower and 442 pound-feet of torque in the new X3 M and X4 M, and at 503 horses in the Competition versions, it’s the most powerful six-cylinder gasoline engine BMW has built to date.

A double treat, then, to be able to see what the X3M can do despite BMW’s traditionally modest claims, but also, for all intents and purposes, a sneak preview for the upcoming M3 and M4’s potential.

We arrived at AMS Performance on a hot and humid day, the 89 Octane delivery fuel still sloshing around in the tank and a mere 114 miles on the odometer. It would seem, then, that the odds were stacked against us to make any sort of newsworthy claims. Nevertheless, anticipation was high—the AMS crew brought the S58 to life, crept our X3M onto the rollers, and safely strapped it down. It sat there poised and eager to perform as we gave its athletic proportions one last approving nod.

The fans switched on as the wheels began to spin on the rollers. Gear shifts through first, second, and third came and went without any theater. But when fourth arrived, the revs climbed with urgency to redline, the rollers screamed to keep up with the X3M’s torque demands. Sport Plus gave us an aural treat when the X3M came off throttle, a slew of satisfying burbles filled the air as the X3M settled back down to rest.

And then we saw it: 491 horses and 446 pound-feet of torque at the wheels on measly 89 Octane. At roughly ten percent drivetrain loss, you can do the math (and in case you can’t, we’ve broken it down below).

We decided it’d be an opportune time to also verify BMW’s curb weight claims before making our way back to IND, so onto a set of scales it went. 4510 lbs was the net result with just under half a tank and the Competition’s 21” wheel / tire combo. Weight distribution was pure BMW at nearly 50/50.

Despite the conditions, we were absolutely thrilled by the baseline results and are eagerly looking forward to developing our new X3M project over the upcoming months. Stay tuned for more!

BMW X3MC (10% Drivetrain Loss): 452.7 hp, 397.8 tq
IND X3MC (10% Drivetrain Loss): 491.7 hp, 446.1 tq
BMW X3MC (Crank): 503hp, 442 tq
IND X3MC (Crank): 542hp, 490.3 tq

BMW X3M40i Curb Weight: 4,317 lbs
BMW X3MC Curb Weight: 4,620 lbs
IND X3MC Curb Weight: 4,510 lbs (half tank)

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      07-29-2019, 02:06 PM   #2
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Quote:
Originally Posted by IND-Distribution View Post
BMW X3MC (10% Drivetrain Loss): 452.7 hp, 397.8 tq
IND X3MC (10% Drivetrain Loss): 491.7 hp, 446.1 tq
BMW X3MC (Crank): 503hp, 442 tq
IND X3MC (Crank): 542hp, 490.3 tq
this is great news IND, thank you for sharing.
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      07-29-2019, 03:16 PM   #3
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Quote:
Originally Posted by IND-Distribution View Post


The all-new F97 X3M is the welcomed newcomer amongst BMW’s M garage, not only as the upper crust of the X3 lineup, but certainly because of what’s under the hood—the S58 engine. Rated at 473 horsepower and 442 pound-feet of torque in the new X3 M and X4 M, and at 503 horses in the Competition versions, it’s the most powerful six-cylinder gasoline engine BMW has built to date.

A double treat, then, to be able to see what the X3M can do despite BMW’s traditionally modest claims, but also, for all intents and purposes, a sneak preview for the upcoming M3 and M4’s potential.

We arrived at AMS Performance on a hot and humid day, the 89 Octane delivery fuel still sloshing around in the tank and a mere 114 miles on the odometer. It would seem, then, that the odds were stacked against us to make any sort of newsworthy claims. Nevertheless, anticipation was high—the AMS crew brought the S58 to life, crept our X3M onto the rollers, and safely strapped it down. It sat there poised and eager to perform as we gave its athletic proportions one last approving nod.

The fans switched on as the wheels began to spin on the rollers. Gear shifts through first, second, and third came and went without any theater. But when fourth arrived, the revs climbed with urgency to redline, the rollers screamed to keep up with the X3M’s torque demands. Sport Plus gave us an aural treat when the X3M came off throttle, a slew of satisfying burbles filled the air as the X3M settled back down to rest.

And then we saw it: 491 horses and 446 pound-feet of torque at the wheels on measly 89 Octane. At roughly ten percent drivetrain loss, you can do the math (and in case you can’t, we’ve broken it down below).

We decided it’d be an opportune time to also verify BMW’s curb weight claims before making our way back to IND, so onto a set of scales it went. 4510 lbs was the net result with just under half a tank and the Competition’s 21” wheel / tire combo. Weight distribution was pure BMW at nearly 50/50.

Despite the conditions, we were absolutely thrilled by the baseline results and are eagerly looking forward to developing our new X3M project over the upcoming months. Stay tuned for more!

BMW X3MC (10% Drivetrain Loss): 452.7 hp, 397.8 tq
IND X3MC (10% Drivetrain Loss): 491.7 hp, 446.1 tq
BMW X3MC (Crank): 503hp, 442 tq
IND X3MC (Crank): 542hp, 490.3 tq

BMW X3M40i Curb Weight: 4,317 lbs
BMW X3MC Curb Weight: 4,620 lbs
IND X3MC Curb Weight: 4,510 lbs (half tank)

AWESOME data ! Does it have a sunroof ? Spare tire ?
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      07-29-2019, 03:26 PM   #4
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Originally Posted by onfireX5 View Post
AWESOME data ! Does it have a sunroof ? Spare tire ?
Yes, our car came with the sunroof and the spare tire.
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      07-29-2019, 03:52 PM   #5
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Yes, our car came with the sunroof and the spare tire.
Thanks ! Ours has both deleted so I'll pull the fuel down to 1/2 tank when it arrives and put it on my corner scales to see what the difference is.
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      07-29-2019, 04:17 PM   #6
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Quote:
Originally Posted by IND-Distribution View Post
Despite the conditions, we were absolutely thrilled by the baseline results and are eagerly looking forward to developing our new X3M project over the upcoming months. Stay tuned for more!

BMW X3MC (10% Drivetrain Loss): 452.7 hp, 397.8 tq
IND X3MC (10% Drivetrain Loss): 491.7 hp, 446.1 tq
BMW X3MC (Crank): 503hp, 442 tq
IND X3MC (Crank): 542hp, 490.3 tq

BMW X3M40i Curb Weight: 4,317 lbs
BMW X3MC Curb Weight: 4,620 lbs
IND X3MC Curb Weight: 4,510 lbs (half tank)
Great data - finally some objective numbers! Many thanks for sharing. And much appreciation to Nate as well who PM'd me with the drag info on the full tank, 100 octane, and info on the spare tire (and we know you have the moon roof). I'm getting ready to post the graph and updated info on the Qtr mile thread [ https://x3.xbimmers.com/forums/showthread.php?t=1444613 ], but the acceleration curve now fits Nate's drag numbers much better using this dyno information. Note my calculations show the Crank estimated at 546 HP and 496 lb-ft, if I divided by 0.9 correctly, so that is what I used for the sim.

Thanks again!
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      07-29-2019, 04:35 PM   #7
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Quote:
Originally Posted by onfireX5 View Post
Thanks ! Ours has both deleted so I'll pull the fuel down to 1/2 tank when it arrives and put it on my corner scales to see what the difference is.
That'll be really helpful, onfireX5 - thanks for offering!
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      07-29-2019, 11:13 PM   #8
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Quote:
Originally Posted by IND-Distribution View Post

We arrived at AMS Performance on a hot and humid day, the 89 Octane delivery fuel still sloshing around in the tank and a mere 114 miles on the odometer. It would seem, then, that the odds were stacked against us to make any sort of newsworthy claims. Nevertheless, anticipation was high—the AMS crew brought the S58 to life, crept our X3M onto the rollers, and safely strapped it down. It sat there poised and eager to perform as we gave its athletic proportions one last approving nod.
2 questions...

How’d you get real license plates so quickly? Illinois convicts must be better than Texas convicts!

Why are you running 89 Octane when the minimum is 91 for this engine? Did the dealer really pour 89?

J
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      08-01-2019, 10:40 AM   #9
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I'm very curious on how you came about with a 10% drivetrain loss..

I've never seen it that low as most cars are 15-20%. Closet car I've seen to that is the Koenigsegg and it's rated around 12% as one of the most efficient.
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      08-02-2019, 11:15 AM   #10
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Quote:
Originally Posted by IND-Distribution View Post
[img]https://live.staticflickr.com/65535/...eee6c43b_b.jpg[/img]

The all-new F97 X3M is the welcomed newcomer amongst BMW's M garage, not only as the upper crust of the X3 lineup, but certainly because of what's under the hood—the S58 engine. Rated at 473 horsepower and 442 pound-feet of torque in the new X3 M and X4 M, and at 503 horses in the Competition versions, it's the most powerful six-cylinder gasoline engine BMW has built to date.

A double treat, then, to be able to see what the X3M can do despite BMW's traditionally modest claims, but also, for all intents and purposes, a sneak preview for the upcoming M3 and M4's potential.

We arrived at AMS Performance on a hot and humid day, the 89 Octane delivery fuel still sloshing around in the tank and a mere 114 miles on the odometer. It would seem, then, that the odds were stacked against us to make any sort of newsworthy claims. Nevertheless, anticipation was high—the AMS crew brought the S58 to life, crept our X3M onto the rollers, and safely strapped it down. It sat there poised and eager to perform as we gave its athletic proportions one last approving nod.

The fans switched on as the wheels began to spin on the rollers. Gear shifts through first, second, and third came and went without any theater. But when fourth arrived, the revs climbed with urgency to redline, the rollers screamed to keep up with the X3M's torque demands. Sport Plus gave us an aural treat when the X3M came off throttle, a slew of satisfying burbles filled the air as the X3M settled back down to rest.

And then we saw it: 491 horses and 446 pound-feet of torque at the wheels on measly 89 Octane. At roughly ten percent drivetrain loss, you can do the math (and in case you can't, we've broken it down below).

We decided it'd be an opportune time to also verify BMW's curb weight claims before making our way back to IND, so onto a set of scales it went. 4510 lbs was the net result with just under half a tank and the Competition's 21" wheel / tire combo. Weight distribution was pure BMW at nearly 50/50.

Despite the conditions, we were absolutely thrilled by the baseline results and are eagerly looking forward to developing our new X3M project over the upcoming months. Stay tuned for more!

BMW X3MC (10% Drivetrain Loss): 452.7 hp, 397.8 tq
IND X3MC (10% Drivetrain Loss): 491.7 hp, 446.1 tq
BMW X3MC (Crank): 503hp, 442 tq
IND X3MC (Crank): 542hp, 490.3 tq

BMW X3M40i Curb Weight: 4,317 lbs
BMW X3MC Curb Weight: 4,620 lbs
IND X3MC Curb Weight: 4,510 lbs (half tank)

Wow! Great data! The new engine is def a beast, can't wait to see the build.
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      08-02-2019, 11:27 AM   #11
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So what do we learn about this curve? How does it compare to S55?
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      09-24-2019, 10:56 AM   #12
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This is excellent! thank you for sharing this info!!
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      09-24-2019, 12:59 PM   #13
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this makes me even more excited for my x4mc!
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      09-30-2019, 11:55 AM   #14
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Love the underrated nature of the ///M motors.
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      09-30-2019, 12:00 PM   #15
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Quote:
Originally Posted by JohnNick72 View Post
Quote:
Originally Posted by IND-Distribution View Post

We arrived at AMS Performance on a hot and humid day, the 89 Octane delivery fuel still sloshing around in the tank and a mere 114 miles on the odometer. It would seem, then, that the odds were stacked against us to make any sort of newsworthy claims. Nevertheless, anticipation was high—the AMS crew brought the S58 to life, crept our X3M onto the rollers, and safely strapped it down. It sat there poised and eager to perform as we gave its athletic proportions one last approving nod.
2 questions...

How’d you get real license plates so quickly? Illinois convicts must be better than Texas convicts!

Why are you running 89 Octane when the minimum is 91 for this engine? Did the dealer really pour 89?

J
I was also wondering that.
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      09-30-2019, 12:20 PM   #16
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So if this is the same motor in an M340i... then can we expect that with a tune and bolt ons we will See 500+ hp in that car too?
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      09-30-2019, 12:20 PM   #17
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So basically it's an almost 600 HP SUV! Amazing!!
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      09-30-2019, 12:24 PM   #18
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Quote:
Originally Posted by 23109VC View Post
So if this is the same motor in an M340i... then can we expect that with a tune and bolt ons we will See 500+ hp in that car too?
Not the same engine. M340i only has 1 turbo.
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      09-30-2019, 12:30 PM   #19
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Quote:
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So if this is the same motor in an M340i... then can we expect that with a tune and bolt ons we will See 500+ hp in that car too?
Not sure what you are talking about, but M340i has B58(single turbo) where X3M(twin turbo) has S58. X3 M40i is more of comparsion to M340i.
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      09-30-2019, 06:29 PM   #20
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safe to say this engine is a monster.
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      09-30-2019, 06:41 PM   #21
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Imagine the S58 in a car that'll be roughly 800 lbs lighter
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      09-30-2019, 07:15 PM   #22
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That's insane power, but why?

I get it, "why not" right.

I feel like BMW has sold out the ///M Brand. It use to be exclusive, only certain models and only few models offered the M package or M sport. Now, it's ///M on everything. Worse part is that the owners are convinced they are driving an M car. Lol..
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