[doberzus]

So I ran our 100% stock X3M Comp using the Dragy and got the below results.

Octane: 91
DA: 4230 (Elevation 4250ft)
Engine: Sport Plus
Suspension: Comfort
Steering: Sport

Spare tire, jack, tools, manual removed.
LC used and this was the best runs.

0-60: 4.02
0-60 w/1ft rollout: 3.77
0-100: 8.96
1/4 Mile: 12.06 @ 116MPH
0-130: 15:68

[knepsterd]

Was a deadman driving your suv



https://x3.xbimmers.com/forums/showthread.php?t=1647823

[doberzus]

Originally Posted by knepsterd

Was a deadman driving your suv



https://x3.xbimmers.com/forums/showthread.php?t=1647823

I don't know what that means?

[SWOT1]

Think he's saying your time is pretty slow... but your elevation and 91 oct probably has something to do with it. (at 4000ft.+ up, your engine has 10-12% less hp than at sea level)
With that, at seal level, using 93 octane, you might expect your vehicle to run 3.5-3.6 0-60.... about where we'd expect it.

[knepsterd]

Originally Posted by SWOT1

Think he's saying your time is pretty slow... but your elevation and 91 oct probably has something to do with it. (at 4000ft.+ up, your engine has 10-12% less hp than at sea level)
With that, at seal level, using 93 octane, you might expect your vehicle to run 3.5-3.6 0-60.... about where we'd expect it.

The one that I sent link to was 4000 ft

[doberzus]

Originally Posted by SWOT1

Think he's saying your time is pretty slow... but your elevation and 91 oct probably has something to do with it. (at 4000ft.+ up, your engine has 10-12% less hp than at sea level)
With that, at seal level, using 93 octane, you might expect your vehicle to run 3.5-3.6 0-60.... about where we'd expect it.

Elevation, 91 octane, 230lb driver, different conditions, road surfaces etc. I also have a fully loaded car with the panoramic roof.

The other guy who ran an 11.7 at 118 only ran 3/10s faster and trapped 2MPH higher. He’s the outlier. My results are within the norm for 91 octane as BMS also ran a 4.0 flat 0-60 with a 12.0@116 1/4 mile.

Not bad at all for a heavy SUV running 91 octane at 4250ft above sea level.

For comparison, my 2017 F80 Comp/DCT ran a best of 12.8 @115MPH
and my 8A Hellcat ran an 12.5 @119 at the local 1/4 mile track that is now closed down. That was in the summer heat with 8500DA, but still the 91 oct and altitude kills us up here.

[SWOT1]

Originally Posted by knepsterd

The one that I sent link to was 4000 ft

Hmmmm, so you're saying his vehicle is slow as F, or he's a deadman driving?? Don't think the difference in Octane would make that much of a difference.

At 4250 ft. that's honestly a respectable time!!

[Max Well]

Thanks for sharing, doberzus.

Hope to get to the track on 23 Nov and will run our X3MC which has the exact same specs as OnfireX5 (no moonroof, no spare). I also weighed at a DOT facility with 7/8 full tank and my weight (180 lbs), and it is spot-on consistent with his X3MC's weight he measured. DOT is only accurate to +/- 20 lbs, so I have no reason to doubt his weight info. So I will be using that as my weight constant when I run. I'll also provide appropriate atmospheric data.

And will test with Shell 93 Octane, and the following (Eff, Sport, Sport + as regular stoplight take-offs, then LC as time allows). Altitude ~100', so expect marked differences in the power curve at this lower elevation.

[doberzus]

Originally Posted by Max Well

Thanks for sharing, doberzus.

Hope to get to the track on 23 Nov and will run our X3MC which has the exact same specs as OnfireX5 (no moonroof, no spare). I also weighed at a DOT facility with 7/8 full tank and my weight (180 lbs), and it is spot-on consistent with his X3MC's weight he measured. DOT is only accurate to +/- 20 lbs, so I have no reason to doubt his weight info. So I will be using that as my weight constant when I run. I'll also provide appropriate atmospheric data.

And will test with Shell 93 Octane, and the following (Eff, Sport, Sport + as regular stoplight take-offs, then LC as time allows). Altitude ~100', so expect marked differences in the power curve at this lower elevation.

Can’t wait to see what yours will do. With the lower weight, 93 oct, and sea level I am expecting 11.6-11.7s @118+MPH

Don’t forget to allow 3 solid seconds to build boost before letting off for launch control. However, anything over 4 seconds and the brakes won’t hold, so timing LC is quite the test in timing and patience.

[Max Well]

Originally Posted by doberzus

Can’t wait to see what yours will do. With the lower weight, 93 oct, and sea level I am expecting 11.6-11.7s @118+MPH

Don’t forget to allow 3 solid seconds to build boost before letting off for launch control. However, anything over 4 seconds and the brakes won’t hold, so timing LC is quite the test in timing and patience.

Thanks for the reminder on the LC. As I'm at 2800 miles (300 to go before using LC per BMW's recs) I haven't tried it out yet. Want to practice some before the 23rd as you've suggested.

Alot of you indicate LC is easy to perform, but I'm still somewhat confused after reviewing the Owner's Manual and the pdf 'whole vehicle' which ynguldyn shared.

Owner's manual indicates deactivating dynamic stability control, which seems to suggest holding down the DSC button for 3 sec. But everything I've read from you all suggests just pushing the DSC button briefly. That appears to just deactivate MDM (which shows the DSC OFF symbol), but why don't they just say to deactivate MDM if all you have to do is push it (not hold it). With MDM deactivated my understanding is there is still a component of DSC at the extremes of the envelope, so technically, DSC is still operational to at least some extent in the background?

Another aspect which seems confusing to me is having to place it in 'Manual (or Sequential) mode' and select S3. Intuitively, this would mean you should have to then manually shift while accelerating using LC, but they indicate that upshifting occurs automatically as long as the flag symbol is displayed and the accelerator pedal is not released. Just seems counterintuitive to have to place a vehicle into Manual status to arrive at an automatic process...

Another variation in the instructions - the Owner's Manual tells you to 'forcefully press down on the brake...', whereas the Whole Vehicle tech document (p.24) says 'The brake pedal is gently pressed with the left foot and held...'. Does it matter the force used on the brake pedal then?

And when you push the accelerator fully and hold it, does the RPM slowly ramp up as boost is building (I think I remember seeing from onfireX5's logs that it does)? I have visions of seeing the RPM gauge go to redline in a split second!

Thanks in advance for any clarification and apologies for my lack of understanding.

[ParadigmDawg]

Originally Posted by doberzus

So I ran our 100% stock X3M Comp using the Dragy and got the below results.

Octane: 91
DA: 4000+ (Elevation 4250ft)
Engine: Sport Plus
Suspension: Comfort
Steering: Sport

Spare tire, jack, tools, manual removed.
LC used and this was the best runs.

0-60: 4.02
0-60 w/1ft rollout: 3.76
0-100: 8.96
1/4 Mile: 12.06 @ 116MPH
0-130: 15:68

Attachment 2172275

Attachment 2172276

Attachment 2172277

Attachment 2172278

Attachment 2172279

That's almost as fast as my M40i was and close to the same DA and quiet a bit behind my GLC. Something seems off.

[onfireX5]

Originally Posted by Max Well

Thanks for the reminder on the LC. As I'm at 2800 miles (300 to go before using LC per BMW's recs) I haven't tried it out yet. Want to practice some before the 23rd as you've suggested.

Alot of you indicate LC is easy to perform, but I'm still somewhat confused after reviewing the Owner's Manual and the pdf 'whole vehicle' which ynguldyn shared.

Owner's manual indicates deactivating dynamic stability control, which seems to suggest holding down the DSC button for 3 sec. But everything I've read from you all suggests just pushing the DSC button briefly. That appears to just deactivate MDM (which shows the DSC OFF symbol), but why don't they just say to deactivate MDM if all you have to do is push it (not hold it). With MDM deactivated my understanding is there is still a component of DSC at the extremes of the envelope, so technically, DSC is still operational to at least some extent in the background?

Another aspect which seems confusing to me is having to place it in 'Manual (or Sequential) mode' and select S3. Intuitively, this would mean you should have to then manually shift while accelerating using LC, but they indicate that upshifting occurs automatically as long as the flag symbol is displayed and the accelerator pedal is not released. Just seems counterintuitive to have to place a vehicle into Manual status to arrive at an automatic process...

Another variation in the instructions - the Owner's Manual tells you to 'forcefully press down on the brake...', whereas the Whole Vehicle tech document (p.24) says 'The brake pedal is gently pressed with the left foot and held...'. Does it matter the force used on the brake pedal then?

And when you push the accelerator fully and hold it, does the RPM slowly ramp up as boost is building (I think I remember seeing from onfireX5's logs that it does)? I have visions of seeing the RPM gauge go to redline in a split second!

Thanks in advance for any clarification and apologies for my lack of understanding.

Make your life easy and set up the M2 button like I did on my M5 and X3MC. Push it twice and that’s it !

Go to M settings in Idrive. Select M2. Put everything on Sport Plus. Put trans in Manual Max Has to be Manual and it WILL shift automatically IF you launch with the Flags on. Last setting is turn off TC totally (no MDM will not work) Zero TC. Save all of those to M2.

When you want to LC. Press the M2 button twice( had to be twice to confirm TC disabled).

Push the foot brake down hard.

Snap the accelerator pedal to the floor FAST. (Push it slowly and it will not trigger LC).

Count to three. 1 second 1, 1 second2, 1 second 3. And just let off the brake pedal. You will hit 60mph in 3.55ish raw (3.3 corrected with rollout) and the transmission will auto shift as long as then accelerator is wot. When you let off the accelerator, the trans goes back into manual mode.

[doberzus]

Originally Posted by ParadigmDawg

That's almost as fast as my M40i was and close to the same DA and quiet a bit behind my GLC. Something seems off.

Nothing is off. You'd be surprised how much 4250-4500ft above sea level affects cars up here. Especially on 91.

Even if DA was similar somewhere else, cars run slower up here. Make a road trip down here and we can run. I bet 100% you'll be in the 12's. Thinner air on shitty 91 = slower times.

BTW, if X340Is are trapping 115-116MPH, then they are on par with stock F80's. Impressive!

[Max Well]

Originally Posted by onfireX5

Make your life easy and set up the M2 button like I did on my M5 and X3MC. Push it twice and that’s it !

Go to M settings in Idrive. Select M2. Put everything on Sport Plus. Put trans in Manual Max Has to be Manual and it WILL shift automatically IF you launch with the Flags on. Last setting is turn off TC totally (no MDM will not work) Zero TC. Save all of those to M2.

When you want to LC. Press the M2 button twice( had to be twice to confirm TC disabled).

Push the foot brake down hard.

Snap the accelerator pedal to the floor FAST. (Push it slowly and it will not trigger LC).

Count to three. 1 second 1, 1 second2, 1 second 3. And just let off the brake pedal. You will hit 60mph in 3.55ish raw (3.3 corrected with rollout) and the transmission will auto shift as long as then accelerator is wot. When you let off the accelerator, the trans goes back into manual mode.

Perfect - thanks for the explanation and tutorial. All set (here are the images to go along with your instructions)!

[ParadigmDawg]

Originally Posted by doberzus

Nothing is off. You'd be surprised how much 4250-4500ft above sea level affects cars up here. Especially on 91.

Even if DA was similar somewhere else, cars run slower up here. Make a road trip down here and we can run. I bet 100% you'll be in the 12's. Thinner air on shitty 91 = slower times.

BTW, if X340Is are trapping 115-116MPH, then they are on par with stock F80's. Impressive!

I'm not coming, I can't breathe up there....

[onfireX5]

Originally Posted by Max Well

Perfect - thanks for the explanation and tutorial. All set (here are the images to go along with your instructions)!

You are ready to rip !!

[r33_RGSport]

I need someone to make me a private 1/2 mile or block all the cops, haha.

[onfireX5]

Originally Posted by Max Well

Perfect - thanks for the explanation and tutorial. All set (here are the images to go along with your instructions)!

When you stop, hit M2 twice, brake down hard, wot, look down for the Flag and “Launch Control Active”.

[BrockDM]

Originally Posted by onfireX5

When you stop, hit M2 twice, brake down hard, wot, look down for the Flag and “Launch Control Active”.

So even though the trans is set to "S3" it will shift automatically? Is it designed to do this? I know there is a safety feature so it doesn't hold the RPM without shifting but I'm curious if it was designed to do this.

[onfireX5]

Originally Posted by BrockD12

So even though the trans is set to "S3" it will shift automatically? Is it designed to do this? I know there is a safety feature so it doesn't hold the RPM without shifting but I'm curious if it was designed to do this.

Yes. Designed to do this in the M5 and X3M. It is the only way LC will work. Now if you mess up and launch with the Flag/LC and let off the accelerator pedal, it will default back into Manual Mode Only and will not shift. Hello rev limiter.

[BrockDM]

Originally Posted by onfireX5

Yes. Designed to do this in the M5 and X3M. It is the only way LC will work. Now if you mess up and launch with the Flag/LC and let off the accelerator pedal, it will default back into Manual Mode Only and will not shift. Hello rev limiter.

Good to know! Now just need to get past the break in period lol

[Max Well]

Originally Posted by onfireX5

When you stop, hit M2 twice, brake down hard, wot, look down for the Flag and “Launch Control Active”.

Got it, and thanks for the F/U image of the flag and 'LC Active'. I may try to also use the Dragy while there. Not to debate it's accuracy, but seems it can provide ancillary information like 0-60 which formal slips can't. Might be interesting to see how the different settings of Eff, Sport, Sport+ and LC pan out for that number. But I want to focus on getting the runs solid and not fiddling with resetting Dragy and taking screen shots ..., so will see. If you think it might be worth having I can try.