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  #21  
Old 04-14-2017, 10:55 AM
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Originally Posted by AlpineD View Post
I find it hard to believe that every other diesel vehicle has egr deletes which can bypass emissions with their tune and we cant or i just havent found one yet
You have to understand that anyone who makes a tune that will trick the inspection equipment and make the car pass inspection when it is not up to the standart, will put himself in the shoes of VAG group. This will most probably cause a full destruction of someone's business and possibly life.
If you want to do it for yourself, this is fine. You have to buy some fancy equipment to read/write the DDE, send the file for processing to a tuner and you'll be good to go. Then you can start thinking if it is worth it if you get caught by any chance
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  #22  
Old 04-14-2017, 11:36 AM
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Originally Posted by bawareca View Post
You have to understand that anyone who makes a tune that will trick the inspection equipment and make the car pass inspection when it is not up to the standart, will put himself in the shoes of VAG group. This will most probably cause a full destruction of someone's business and possibly life.
If you want to do it for yourself, this is fine. You have to buy some fancy equipment to read/write the DDE, send the file for processing to a tuner and you'll be good to go. Then you can start thinking if it is worth it if you get caught by any chance
The electical components are beyond me when it comes to working on a car, i understand your point but i know several chevy,ford,ram trucks that run in my state without egr or adblue and have they all say that they are everywhere for trucks and common. Im just curious since i always thought we were one of the most active car fourm type(bmw) but no tunes going to the darkside exist .If i get caught its off to mexico blowin black smoke the whole way lol
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  #23  
Old 04-14-2017, 11:49 AM
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Originally Posted by AlpineD View Post
The electical components are beyond me when it comes to working on a car, i understand your point but i know several chevy,ford,ram trucks that run in my state without egr or adblue and have they all say that they are everywhere for trucks and common. Im just curious since i always thought we were one of the most active car fourm type(bmw) but no tunes going to the darkside exist .If i get caught its off to mexico blowin black smoke the whole way lol
In California diesels can have one monitor not ready and still pas inspection. If one delete is done (DPF, EGR or SCR) it will pass inspection as the monitor shows "Not ready". If your state has 2 or 3 monitors not ready rule you can do even more.
Plus I dont believe to what anyone claims until there is some kind of proof.
You may be better off to Canada than Mexico
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  #24  
Old 04-14-2017, 01:43 PM
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Originally Posted by bawareca View Post
In California diesels can have one monitor not ready and still pas inspection. If one delete is done (DPF, EGR or SCR) it will pass inspection as the monitor shows "Not ready". If your state has 2 or 3 monitors not ready rule you can do even more.
Plus I dont believe to what anyone claims until there is some kind of proof.
You may be better off to Canada than Mexico
I need to look further into ct emission laws i know no smog testing is done on diesels. Im pretty sure i either have a clogged egr or egr cooler so im kind of weighing my options. Lol maybe but idk if the tacos are too good in the Mapleleaf
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  #25  
Old 04-16-2017, 11:57 AM
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  #26  
Old 04-16-2017, 10:37 PM
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Got the DME last Friday and upon installation the engine started beautifully! the exhaust sound is a lot more than I expected. Sounds pretty much like the other x5d videos where the there is a full straight back pipe. So, the muffler does not cut down the noise as much as I expected at least when standing in the back by the tail pipe.

There is a very present whistle turbo noise at all times at idle coming from the tailpipe, under acceleration it’s even more noticeable. In fact, I would say it sounds pretty Rice under acceleration with the windows down almost like someone put ebay whistle tips in the exhaust.

With windows, up though it’s very tame no sign of any modification at idle or under light acceleration. It only becomes noticeable under heavy acceleration. I like it.

The smell is pretty much that of a caterpillar and I love it it’s only too much if I put my nose at the tailpipe. (the only issue is exhaust fumes coming into the cabin the situation is described below)

The power increase is pretty amazing, car is very responsive and acceleration is effortless with very little use of the throttle. So far, I drove 100 miles and pretty much the car responds quicker at any speed. Torque is ridiculous starting from 0 and pretty much any city driving speed there is more than enough available oomph. Passing power at around 60 in the highway is pretty ridiculous as well it’s hard to believe that a car this heavy gets going that fast. I am not a lead foot driver, mostly keep to speed limits but even just keeping up with traffic there is significantly less throttle use.

I can understand what bwareca said about the transmission doing stupid things. Sometimes it will hesitate and downshift for no good reason then proceed to yank you really hard. It happens at low speeds under sudden acceleration. But that’s another issue that hopefully will be addressed when there is a transmission tune. not that it needs to be addressed for me the car gets going fast enough.

As far as mileage I estimate gains of a solid 2 MPG at the same average speed as before, this is a premature estimate on my end after only 100 miles, I’ve been doing mostly city driving and mostly hard pulls to hear the turbo 😊 but I think my estimate is pretty solid.

Issues:

I am getting a lot of exhaust fumes in the cabin so I hooked up a vacuum to the tail pipe and stuck a medium sized water bottle in the other exhaust outlet to increase vacuum. There is a LOT of hissing from the turbo outlet seam to the downpipe and from the downpipe to the midpipe at the clamp.

Of course, I did not replace the turbo outlet gasket when I removed the old one so that might be the reason why? All tho the old one looked just fine to me. I will be ordering a new one anyway and getting under the car again to fix this.

As far as the downpipe to midpipe clamp im not sure why it’s leaking. Either the Buzzken pipes are not up to spec (not round) or I did not position the clamp properly. Never done this before but I assume the clamp must be at the very end of the seam overlapping the smaller pipe and with the screw where the crack for the outside pipe is.

Reading on other forums I see that sometimes there is no way to get it to seal other than to weld the pipes. I think it’s a matter of fitting each pipe while checking your work with a vacuum and adjusting until you achieve a perfect seal before attaching the next section of piping. Unfortunately, the welded exhaust leg on the midpipe is crooked so when I put the rubber exhaust mount and screw it to the car it pulls the entire exhaust towards the engine this might have caused the leaks, tilting the flange preventing it from sealing. seriously they should have made sure the leg comes out at 90 degrees.

Interestingly I got a check engine light due to the fact that the nox sensors where removed. Codes U029 and U059 Apparently, I’m the first one (trough TRF tunning) who has actually physically disconnected the NOX sensors from the cars electric port. Apparently, everyone else just removed the sensors from the tailpipe and left them dangling. Interesting because the computer does not appear to use nox sensors data relating to NOX fumes anymore yet it’s still checking whether the NOX sensors are plugged in and triggering a check engine light for it.
So the guys at TRF tunning are figuring that detail out.

There is also now a code for P407 “Exhaust gas recirculation sensor “B” circuit low”
Kirk has the same code on his car and he does not have a check engine light, so this not of great concern. But I’d still like to figure out what is triggering it. Tried plugging in the EGR valve and there was no change. I did leave the EGR vacuum line hanging so It’s possible the dangling line is causing it. I shall cap it next time I am under the car to see if it makes any difference. Another thing to try is to plug in the EGR valve AND the vacuum hose to see if that clears It. If not this code might just be caused by the tune and there is nothing to be done.

I did get a DSC malfunction message when the car first started, I think it’s related to unplugging the battery, solved by turning the wheel left and then right and then center.

At the end of the day I’m pretty happy with the tune, happy to get all the useless junk out of the car and enjoying effortless highway cruising.

Does anyone know how to embed YouTube videos in this forum?
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  #27  
Old 04-17-2017, 10:09 AM
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Originally Posted by Stockx5 View Post
Torque is ridiculous starting from 0 and pretty much any city driving speed there is more than enough available oomph. Passing power at around 60 in the highway is pretty ridiculous as well it’s hard to believe that a car this heavy gets going that fast.
The car is relatively slow off the line, although I guess it will go under 5 sec with a proper brake boosting. From 50 to 120mph is where it is truly amazing. I have had a few accidental freeway pulls and it stays with C7 vette and kills E90 M3 at that speeds.
Good to hear you are happy with the X as it is now. We will have to make one more revision of the tune to delete the present fault codes too and include it for the future.
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  #28  
Old 04-18-2017, 03:22 PM
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went to a muffler shop today had the car lifted and found that the midpipe to muffler sleeve has come loose and has also developed a leak.

their advice was to weld everything together as the clamps/sleves will continue to have issues.

problem with welding everything together is that I don't think the exhaust can be removed unless the rear bumper is removed. not sure how difficult that is. it might be a lesser inconvenience vs living with a constantly leaky exhaust.


was quoted 100 bucks to readjust the flange leak install the gasket I bought, weld the downpipe to midpipe and weld the midpipe to muffler. not bad at all to be done with the problem once and for all.

I guess it's worth re-tightening the clamps one more time before just welding the entire thing together. but my opinion right now is that the clamps might not be practical at all. maybe they just include them with the kit to make it more palatable for potential buyers but in reality might be very difficult to achieve a seal.


as for the tune, I have unplugged the egr valve electric connection at the throttle and the electric connections for the vacuum lines for the egr at the throttle before sending the computer back to bwareca that way if any codes come up we can address them now to be included in the software flash.

I wish i could disconnect the urea tanks as well before sending the computer back..but im not sure ill get to it. there seems to be no DIY on the tanks.
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  #29  
Old 04-18-2017, 03:47 PM
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Originally Posted by Stockx5 View Post
problem with welding everything together is that I don't think the exhaust can be removed unless the rear bumper is removed. not sure how difficult that is. it might be a lesser inconvenience vs living with a constantly leaky exhaust.
Bumper removal is not difficult. Especially compared to what you have already removed and reassembled for this project.

I had to remove the bumper to DIY-install tow hitch. Search youtube for "e70 bumper removal", there's a good tow hitch installation video with good bumper removal part.
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  #30  
Old 04-18-2017, 07:42 PM
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Originally Posted by seattle View Post
Bumper removal is not difficult. Especially compared to what you have already removed and reassembled for this project.

I had to remove the bumper to DIY-install tow hitch. Search youtube for "e70 bumper removal", there's a good tow hitch installation video with good bumper removal part.
ok good to know, I'm really leaning towards welding everything then. Should get the gasket by the end of this week.


I found some info on how to remove the DEF tank on this link
X5 35d CEL P205b - Page 3 - Bimmerfest - BMW Forums

saving that for later...I think for now I will just pull the fuse for the urea system..if i can find it.
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