Great to hear that :thumbup:Looks like a solid work.
BTW your tuner Alex is the one who expects transmission doomsday ;) Only time will tell.

Thanks for the update. I'll be curious to hear how it all is going after 10-15k miles, too. I'm not in any position to make these changes to my X right now, but certainly something I'm interested in for the future.

Do you have any way to log live data?

I was pulling a UHaul 6x12 dual axle trailer with 2 motorcycles and some camping gears. Call it 3,000lbs all together.

Coming back from the race track I was able to monitor a few live parameter and going up the Tejon pass on I-5S (https://en.wikipedia.org/wiki/Tejon_Pass) at 65mph EGT was up to right around 700C (that's right around 1,300F). No DPF regen going on.

I had the cruise control on and that was full boost, 4th gear, probably right around 3K rpm if I remember it right.

What kind of EGT you see when you put full load for some time? I know it's kind of an open question, but if you have some example to share I'd be interested.

No, there were some here who predicted that changing the trans fluid/filter would create transmission problems. It wasn't Alex that stated that.

About the transmission myth.... some people say that if you never changed the fluid/filter in the recommended schedule and you are way pass that you should do it at all!!! Whats your take on this issue, some bimmers come with bad tranys like the first E46 were having issues but then BMW corrected the issue and then they were rock solid. But I'm curious on the x5 35d to see if it will break. I'm planning on keeping mine for the long run 200k at least.

The stated reason for not changing at all is that it would dislodge some broken off bits and they would get stuck in places, clog passages, get grinded etc. Leading to some breakdown. Perhaps there is a chance of that.

But the way to guarantee transmission breakdown at 150K is to never change fluid.

One has to understand that for BMWNA, "lifetime" means 100K, a period after which they are not liable for anything (at this mileage is past original warranty, past CPO, past any of their extended warranties).

Any update on this, or anyone else running the same or a comparable setup? I'd love to delete everything off of my X5, but it seems like most discussions around tunes and deletes for this motor involve the same few folks talking in some coded language...it hasn't been easy getting good, solid information on what's available.

Lets start here:

Do they have smog control and/or inspections where you live?

If 'Yes", then how would you plan on handling that? Answer that before you talk tunes and mods.

No. One-time safety inspection and diesels are exempt from the bi-annual emissions inspections that gas powered vehicles are subject to.

What are the federal implications for removing/altering vehicle emission control system/devices? Is it similar to those for gasoline powered vehicles?