[z3Ro]

i think i see this from a different perspective. true it might be more fun but the real reason for me is if i get a flat and if i dont have cash on the side to replace all 4 at the same time. disabling it will allow me to run some shit temp. tire till i can all 4

[relative4]

Originally Posted by z3Ro

i think i see this from a different perspective. true it might be more fun but the real reason for me is if i get a flat and if i dont have cash on the side to replace all 4 at the same time. disabling it will allow me to run some shit temp. tire till i can all 4

Wrong. Disengaging power from the front driveshaft will not protect the differentials from the effects of unequal tire diameters.

[OstrichE92]

Originally Posted by relative4

Wrong. Disengaging power from the front driveshaft will not protect the differentials from the effects of unequal tire diameters.

I think it might stop the X-Drive system from freaking out though, could be talking out of my ass lol.

[blown07]

Originally Posted by relative4

Wrong. Disengaging power from the front driveshaft will not protect the differentials from the effects of unequal tire diameters.

Why would open differentials not tied together by a transfer case care if tire sizes are different?

[relative4]

Originally Posted by blown07

Why would open differentials not tied together by a transfer case care if tire sizes are different?

If the left tire and the right tire aren't the same size, the differential will experience excessive wear. The transfer case don't figger into it.

[blown07]

Originally Posted by relative4

If the left tire and the right tire aren't the same size, the differential will experience excessive wear. The transfer case don't figger into it.

So you're concerned about the spider gears slowly rotating around in an open differential to make a small difference in tire wear. No way. He did said he was doing this temporarily as well.

[RoughKnight]

Better safe that sorry. Side note:

Just got xDelete installed today, and holy. What a fun little mod! I thought I broke the car at first, I turned it on before i installed xhp later in the day(disabled xdelete first). Every time I would hit boost the car would literally cut power and throw me into the steering wheel. Thought it was a huge issue at first, no check engine lights, only when I was on the power. Tried to make a pass on the highway and again, almost through the windshield. I looked down and saw the traction control light flash for the first time ever LOL

Fun mod 10/10, would drive 50% of my time in that mode

[Nismo G]

Originally Posted by ewicky

Nope. The front wheels are most likely on the ground, which means the front diff and drive shaft are spinning and losing either way.

You got it! Transfer case resistance is present whether the clutch is engaged or not.

All 4 wheels are rolling. All 4 half-shafts are fighting inertia. Both diffs are spinning. Both driveshafts are twirling away. Rolling resistance is the same. Therefore efficiency is the same.

Yup, as just someone on the internet, you have very little reason to blindly believe me. But you can accept the information I've provided and run it thru your BS detector, and hopefully arrive to a similar conclusion.

I don't know the in and outs of this software mod, but if power is being cut to the front wheels, then there has to be an increase in power. If the VGSG is keeping the transfer case clutch open, then your certainly gaining power from less drive train loss. I'd imagine the car is most definitely fast from 70-130mph...

I'm interested to hear/learn more about why this has otherwise been proven wrong...?

[ewicky]

Originally Posted by Nismo G

I don't know the in and outs of this software mod, but if power is being cut to the front wheels, then there has to be an increase in power. If the VGSG is keeping the transfer case clutch open, then your certainly gaining power from less drive train loss. I'd imagine the car is most definitely fast from 70-130mph...

I'm interested to hear/learn more about why this has otherwise been proven wrong...?

Clutch open doesn't eliminate drivetrain losses, as everything is still spinning and dragging. Also, according to BMW's own documentation, xDrive is inactive above 70 or so MPH. Every one of our factory cars "xDeletes" itself automatically every time it's at cruising speed. So even if the fine folks at xDelete have broken the laws of physics that have held up for the last 4.7 billion years, it still wouldn't make a 70-130 MPH pull any faster than stock since BMW beat them to it.

The only reason they measured an increase in power was a obvious deficiency in the testing method, which is clearly visible in the dyno video they've uploaded to social media. They compared front wheels spinning against front wheels not spinning. The power-increase/drivetrain-loss-reduction they observed could only be achieved IRL if you managed to pop and hold a wheelie at all times. Good luck steering!

[Needbmwpartzz]

:
I just asked for a refund for my x-delete...so far no response back.

[Nismo G]

Originally Posted by ewicky

Clutch open doesn't eliminate drivetrain losses, as everything is still spinning and dragging. Also, according to BMW's own documentation, xDrive is inactive above 70 or so MPH. Every one of our factory cars "xDeletes" itself automatically every time it's at cruising speed. So even if the fine folks at xDelete have broken the laws of physics that have held up for the last 4.7 billion years, it still wouldn't make a 70-130 MPH pull any faster than stock since BMW beat them to it.

The only reason they measured an increase in power was a obvious deficiency in the testing method, which is clearly visible in the dyno video they've uploaded to social media. They compared front wheels spinning against front wheels not spinning. The power-increase/drivetrain-loss-reduction they observed could only be achieved IRL if you managed to pop and hold a wheelie at all times. Good luck steering!

Hmmm interesting. I still would believe that with the clutch engaged there would be additional drivetrain loss since the transfer case is actually forced to "drive" the front wheels vs the front wheels rotating "freely". Beyond my pay grade though to dive any deeper lol

I have heard about the xdrive disengaging after 70mph, but last time I read on it (probably two years ago) some were unsure if it was still the case with the e9x pre "x drive" branding. Do you have any sources to this information? It seems silly to have awd turn off above 70mph...especially if there is any type of rain or light snow present.

[Schmitz]

So, is all the power going to the rear then? Or are you only getting 60% or so?

[Nismo G]

Originally Posted by Schmitz

So, is all the power going to the rear then? Or are you only getting 60% or so?

It's all going to the rear. However, what has been discussed is that there is still drivetrain loss due to all the parts that are still moving. So all the power is being "sent" to the rear via a disengaged transfer case clutch at the front.

[Machspeed93]

Would xDelete protect the transfer case? I've read that transfer cases can fail on higher mileage cars. I'm interested in xDelete for more than protecting the transfer case but also am curious...

[solo118]

Originally Posted by Machspeed93

Would xDelete protect the transfer case? I've read that transfer cases can fail on higher mileage cars. I'm interested in xDelete for more than protecting the transfer case but also am curious...

I do not know about "protecting" it, but it should lessen the wear as per what I read.

I have also seen cases where people with transfer case issues just use Xdelete as a band aid until they can pay to replace the TC.

Either way, it is something I would like to invest in as well. Seems like a pretty neat mod.

[Bimmer_Bro]

I need someone to talk me into xDelete! I have been debating for so long. I Have heard mostly good reviews with a few people the opposite.
I am not interested in making it rwd, however the inbeween settings do sound appealing. I live in Canada so it does get driven in the snow.
I have done my transmission service, plus new fluids in both diffs. Mhd stage2+ and Xhp stage 3.
Am I missing out by not using Xdelete !?

I have a side issue of a slight click/play in my steering column. I believe that uJoint. Any idea if the lighter steering feel of Xdelete is going to make this feel worse... or maybe better!?

[putnampunk]

First LSD then I definitely want to give this a try

[Cyril Sneer]

Originally Posted by Bimmer_Bro

I need someone to talk me into xDelete! I have been debating for so long. I Have heard mostly good reviews with a few people the opposite.
I am not interested in making it rwd, however the inbeween settings do sound appealing. I live in Canada so it does get driven in the snow.

Am I missing out by not using Xdelete !?

LSD would make it 1000% better but still worth it in my opinion. I bought it on sale probably around a year ago, along with a cheap Amazon cord that did the job.

With no LSD and no-season tires, I found full xdelete (0% forward) to be entirely useless in low traction driving. I tried the presets (sport and snow) but ultimately found that a custom setting of 35% forward was the best of all worlds. I left it there for the rest of the winter and haven't touched it since.

Seems to have better balance of power off the line and in curves, on the throttle. Steering feels much better. Still enough AWD traction to get moving easily on snow/ice.

It's nothing groundbreaking (might be with LSD though) but seems a small price to pay to have the car feel how it should have from the factory. You know, like a BMW. Next to address this suspension....

Oh, this is on an E91 328xi.

[Rel335]

Wish I had this before I sold my 335xi

[TheRed]

Ngl, kinda disappointed. Looks like xdelete doesn't work on my early Pre-Lci 🙃