Dasky_spas wroteThanks, I'll check it outYou may want to select 'line bump ' for increased plate pressure within xhp. This is suggested for cars in excess of 700hp which you should be. Xhp references crank hp so you should be well over.
You may see an improvement in 0-60 too.
14.9KVIEWS
89REPLIES
46APPRECIATES
11ACTIVE PEOPLE
03-10-2026LAST POST
postbox1918 wroteThose are pretty close to stock X5M numbers so that should give you an idea on improvement.https://www.bimmerpost.com/forums/showpost.php?p=30595877
Tested 0-60 on 91 octane
weinerbarn wroteYes you are right.Those are pretty close to stock X5M numbers so that should give you an idea on improvement.
Yamadawg wroteGood numbers for 1st run, did you tried launch control ?Carbahn tune - ive had it about a month. I’ve only done one run; which was this morning.
postbox1918 wroteYes, I used launch control. That was only my second time using LC.Good numbers for 1st run, did you tried launch control ?
Yamadawg wroteNice, I tried LC one time after tune didn't got good numbers but I'm gonna try it again coz i made a mistake of not waiting for couple of second to build the proper boost before removing the foot from brake paddle.Yes, I used launch control. That was only my second time using LC.
Did you got 91 octane tune or 93?
postbox1918 wroteWe have 93 octane in NC basically everywhere.Nice, I tried LC one time after tune didn't got good numbers but I'm gonna try it again coz i made a mistake of not waiting for couple of second to build the proper boost before removing the foot from brake paddle.
Did you got 91 octane tune or 93?
The first time I used LC, I didn’t wait long enough. This time I feel like I did, but not sure. It wasn’t a great place for a run.
Maybe could shave off a little with some practice but it is …. Plenty fast for my tastes.
cobramite wroteI was a little pressed for time. Found a road off of the path but it isn’t long enough for a real test. I’ll have to take it somewhere on a Sunday and see what it can do.^^^^^Run an 1/8 mile on 0 Map and then after cool down run another in your most aggressive map. Compare the MPH.
Yamadawg wroteI got 91 map because 93 is not available here and I'm also trying to find a place to properly test 0-60 and 1/4 mile numbersWe have 93 octane in NC basically everywhere.
The first time I used LC, I didn’t wait long enough. This time I feel like I did, but not sure. It wasn’t a great place for a run.
Maybe could shave off a little with some practice but it is …. Plenty fast for my tastes.
Yamadawg wroteIt can be difficult and sometimes dangerous generating these times on public roads and highways especially 1/4 mile time/trap.I was a little pressed for time. Found a road of the path but it isn’t long enough for a real test. I’ll have to take it somewhere on a Sunday and see what it can do.
A reasonably well prepped drag strip is best for many reasons and will clearly give you optimal times. Local streets are not going to reveal what your vehicle is capable of in most instances.
It is impossible to eliminate the driver variability.
cobramite wroteMost certainly- I’m an old guy at 57 and have owned a lot of cars, and many fast motorcycles. I’ve done track days at VIR, CMP, Road Atl and Roebling Road. I’ve scraped an elbow on turn 7 at VIR (North Course) on an R6. I’ve owned Porsches, M Cars, AMGs and even a Ferrari. Hell my wife drives a P100D Model S. So I certainly understand the limits.It can be difficult and sometimes dangerous generating these times on public roads and highways especially 1/4 mile time/trap.
A reasonably well prepped drag strip is best for many reasons and will clearly give you optimal times. Local streets are not going to reveal what your vehicle is capable of in most instances.
It is impossible to eliminate the driver variability.
Yamadawg wroteObviously you get it with that backround.Most certainly- I’m an old guy at 57 and have owned a lot of cars, and many fast motorcycles. I’ve done track days at VIR, CMP, Road Atl and Roebling Road. I’ve scraped an elbow on turn 7 at VIR (North Course) on an R6. I’ve owned Porsches, M Cars, AMGs and even a Ferrari. Hell my wife drives a P100D Model S. So I certainly understand the limits.
I've got you by a few years and have been up close and personal with the pavement on a couple different sport bikes. Very lucky to be alive.
postbox1918 wroteI was back and forth with a few Tuners but landed on a EVOLVE remote tune. Like you, the tune had to be compatible wth xhp ( actual tq values sent to the tcu) and Evolve can handle it. I'm not a fan of the email support rather than just calling the tuner but we'll see how the numbers come out. I haven't seen too many n63b motors w this shop but they've done well wth the s63. I'll be the guinea pig I suppose and post in a dedicated channel.Thanks, I'll check it out
I'll send my files this weekend and expect to get my files back likely by mid week. Aiming got 700 to 730bhp.
Dasky_spas wroteYour car DME's are already unlocked?I was back and forth with a few Tuners but landed on a EVOLVE remote tune. Like you, the tune had to be compatible wth xhp ( actual tq values sent to the tcu) and Evolve can handle it. I'm not a fan of the email support rather than just calling the tuner but we'll see how the numbers come out. I haven't seen too many n63b motors w this shop but they've done well wth the s63. I'll be the guinea pig I suppose and post in a dedicated channel.
I'll send my files this weekend and expect to get my files back likely by mid week. Aiming got 700 to 730bhp.
postbox1918 wroteI have an ancient one, a 2019 m850 so that year wasn't locked.Your car DME's are already unlocked?
Dasky_spas wroteDid you check bootmo3 for options?I have an ancient one, a 2019 m850 so that year wasn't locked.
Dasky_spas wroteI had a ride in a pre ecm locked M850i a few years ago. Can't remember what tuning outfit the guy was using. The car was absolutely psycho, crazy fast luxury car.I have an ancient one, a 2019 m850 so that year wasn't locked.
postbox1918 wroteI've read some issues between bootmod and xhp so I steered clear. However if I end up getting hybrid turbos I' may do custom tune via Uktu tuning and that'll be via bm3. For now, giving Evolve a shot.Did you check bootmo3 for options?
postbox1918 wroteTurned out my dme was locked so in the interim I got bm3 to see if that would work and that also needed the unlock. I paid for a local bench unlock (Justin from codemyeuro) and now I'm ready to load a tune. The main tuner at Evolve is Utku so I have him doing a custom tune via bm3. Evolve was kind of enough to issue a refund.Did you got the tune?
The first custom file is awaiting me to load it which I'll do this weekend and send the data logs back for some tweaks.
