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Discussion Starter · #1 ·
Just a heads up, DINAN is making progress with their diesel tune. See note from DINAN below.

"I can not give out specific details but we are making progress and we do have a 335d in the shop.

Thanks!

Brian"
 

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Chris, only three yrs into the "D" here in USA and NOW everyone is jumping on the Bandwagon only to see the "D" dissappear for a year and come back in a new platform and then restart allover again.
 

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I imagine they're going to find like everyone else that the emissions systems limit gains and increase the chances of drivability issues (DPF faults, Injector or HPFP failure, etc).
 

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Discussion Starter · #4 · (Edited)
There is always a limit to what a "respectable" tuner can and is willing to do so they can offer a product that improves peformance without compromising reliability/driveability. I would not say our car's limiting factor is the DPF. Over the long haul the DPF in and of itself has proven to be not the most reliable piece of equipment - tune or no tune. There's a fine line when it comes to optimizing engine performance without necessarily sacraficing in the reliability dept. Remember diesel tuning is nothing new, just take a look at the Cummings diesel forum or the UK section of any BMW forum and the results/feedback regarding true tunes (evolve, smarty etc) are for the most overwhelmingly favorable. Increasing injection timing under certain load conditions, rather than increasing pump pressure across the board to deliver fuel, while at the same time manipulating boost will be the way for DINAN do this in such a way to offer decent performance gains (gains that will hopefully justify the cost) while at the same time not compromise reliability; I mean after all it's their money behind the warranty. There is no reason why our cars cannot safely be tuned for 300+ whp and 470lb ft+ of torque.
 

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Hi, Chris, any rumors of progress from Dinan lately?

That Renntech tune is looking more and more appealing, especially since I just sold my old track wheels (other car), and the funds will be quickly reallocated to other expenses if I don't debit it from the play fund. :)

Thanks for keeping tabs on it. I know we all appreciate it.
 

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Discussion Starter · #6 · (Edited)
Hi, Chris, any rumors of progress from Dinan lately?

That Renntech tune is looking more and more appealing, especially since I just sold my old track wheels (other car), and the funds will be quickly reallocated to other expenses if I don't debit it from the play fund. :)

Thanks for keeping tabs on it. I know we all appreciate it.
Nothing as of late, stopped e-mailing them once a month, but perhaps if you and others start contacting them it might light a fire.

Just keep in mind with the Renntech tune or any other resident tune that you will have to remove your ecu and send it to Renntech, in which case you will be without a car for days. In addition if the dealer overwrites you dme to do a softeware update you will have to go through the same process. Not to mention with a resident tune there is always the off chance the dealer and or bmw na will find that your cars stock operating peramiters were molested.
 

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Nothing as of late, stopped e-mailing them once a month, but perhaps if and others start contacting them it might light a fire.

Just keep in mind with the Renntech tune or any other resident tune that you will have to remove your ecu and send it to Renntech, in which case you will be without a car for days. In addition if the dealer overwrites you dme to do a softeware update you will have to go through the same process. Not to mention with a resident tune there is always the off chance the dealer and or bmw na will find that your cars stock operating peramiters were molested.
If the dealer does a routine software update (like they do from time to time), does that mean they will necessarily overwrite the ECU Tune? Just curious.:dunno:

I live about 3+ hours away from Renntech so going back is not a major deal to get it retuned if required.
 

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Not sure about the BMW dealer but there are a lot of rumors on Audi Forum where dealer is noting the car has been re-flashed. Which in event you go back for warranty use dealer can reject your claim. Again those are rumors on AudiZine website.
 

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Discussion Starter · #9 · (Edited)
If the dealer does a routine software update (like they do from time to time), does that mean they will necessarily overwrite the ECU Tune? Just curious.:dunno:

I live about 3+ hours away from Renntech so going back is not a major deal to get it retuned if required.
If they perform a major software update then yes they will likely overwrite the tune.
 

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Discussion Starter · #10 · (Edited)
Not sure about the BMW dealer but there are a lot of rumors on Audi Forum where dealer is noting the car has been re-flashed. Which in event you go back for warranty use dealer can reject your claim. Again those are rumors on AudiZine website.
If push came to shove, YES BMWNA can tell how many times the DME has been reflashed and they can compare it against their records. If the count is different it indicates the DME was molested in some fashion which may prompt them to dig deeper and there they will find that the ecu was reflashed. All of these tuners say "no way" the dealer can tell, but none of them stand behind it.

Now of course these are worst case senarios, like in the event of some chastostrophic failure.
 

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Chris it is great assumption that the dealer can find the NEW flash, I believe back then in 04 I modded my 02 MCS and the dealer only does read CODES only back then, but nowadays I beleive they might be able to find out. i will ask my sources and i will keep u guys posted ok
 

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Not sure about the BMW dealer but there are a lot of rumors on Audi Forum where dealer is noting the car has been re-flashed. Which in event you go back for warranty use dealer can reject your claim. Again those are rumors on AudiZine website.
I know Ford does this. Though it typically only comes up in issues where it is some major failure such as an engine going south. I know a few people who got dinged by it and were all butt hurt over it. I personally think if anyone is going to be modding a car they should accept from the get go they might very well end up having to pay out of pocket to fix things(that in anyway can be related to the mod) that break. It is kind of like racing a car, if you can't afford to up and loose the thing at any moment then perhaps putting it in a situation that a wreck might happen and insurance will refuse to cover is a bad idea.
 

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Nothing as of late, stopped e-mailing them once a month, but perhaps if you and others start contacting them it might light a fire.

Just keep in mind with the Renntech tune or any other resident tune that you will have to remove your ecu and send it to Renntech, in which case you will be without a car for days. In addition if the dealer overwrites you dme to do a softeware update you will have to go through the same process. Not to mention with a resident tune there is always the off chance the dealer and or bmw na will find that your cars stock operating peramiters were molested.
Indeed. That is why I would REALLY prefer Dinan. I will email them again this evening & see what they say.

JBD is may be a decent interim option, but I don't think I would go there. I want to keep the car running as long as possible, thus I would prefer going about tuning in the safER way if possible.

Snipe is right, and i dont think cssnms would disagree, any tune means hence forth you are either lucky or your own warranty (or your own lawyer ;) )
 

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Discussion Starter · #14 · (Edited)
Indeed. That is why I would REALLY prefer Dinan. I will email them again this evening & see what they say.

JBD is may be a decent interim option, but I don't think I would go there. I want to keep the car running as long as possible, thus I would prefer going about tuning in the safER way if possible.

Snipe is right, and i dont think cssnms would disagree, any tune means hence forth you are either lucky or your own warranty (or your own lawyer ;) )
I wouldn't consider the JBD "unsafe," esp at the default setting I would consider a rather benign way to increase hp. The only thing it is doing is injecting more fuel into the combustion chamber, which is how tuners get the vast majority of power out of a diesel engine. Diesel engines are less complicated than a gasoline engine in that regard, where you have to worry more about AFR's etc. If you add to much fuel idiesels just blow more black smoke. There are thousands of JBD's in service and I am not aware of any problems so far, other than the dreaded limp mode when it's cranked up to 100%.
 

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As someone who has had diesel injectors on other cars fail and wittnessed countless destroyed motors in friends trucks, I am hesitant about diesel tunes in general. Especially diesel tunes done by people new to diesels since seen the worst happen there. I am also hesitant about upper fuel pressures and how well the injectors will last in the long term. By long term I mean well over 100k miles. But with that said I just don't see me having this car for the long term, so not sure if I care to worry about "what ifs"
 

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Am I wrong in that a standard remap would more adjust injection duration/timing than quantity, thus adding the additional fuel without as much additional pressure? My fear more falls along the lines of long-term reliability of the major components if forced to operate at a greater pressure on a consistant basis?

Also, it is my understanding that based on the way in which the signal is manipulated, the JbD is not able to scale back the pressure increase based on load profile. Right/wrong?

If I could overcome these two items, I would probably hop on the JbD boat until the Dinan is released, but, even still, I'd rather not play beta tester for dinan either. I do, however, feel that their well-deserved reputation far overcomes the possible lack of diesel experience argument, but new product lines will always have potential for new product issues until they are tested by the masses.

Thanks for helping me develop an understanding. Keep in mind that over the course of a few weeks I went from knowing the ins and outs of my car with no pistons to knowing next to nothing about my car with no spark plugs.
 

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Am I wrong in that a standard remap would more adjust injection duration/timing than quantity, thus adding the additional fuel without as much additional pressure? My fear more falls along the lines of long-term reliability of the major components if forced to operate at a greater pressure on a consistant basis?

Also, it is my understanding that based on the way in which the signal is manipulated, the JbD is not able to scale back the pressure increase based on load profile. Right/wrong?

If I could overcome these two items, I would probably hop on the JbD boat until the Dinan is released, but, even still, I'd rather not play beta tester for dinan either. I do, however, feel that their well-deserved reputation far overcomes the possible lack of diesel experience argument, but new product lines will always have potential for new product issues until they are tested by the masses.

Thanks for helping me develop an understanding. Keep in mind that over the course of a few weeks I went from knowing the ins and outs of my car with no pistons to knowing next to nothing about my car with no spark plugs.
The basic reasons you state are the basic reasons why I'd prefer to have a remap. Now whether they are valid reasons to have or not, I can't say for certain. I'd imagine anyone could take a JBD and toss it on their car and more than likely have zero issues caused by it for the life that they keep the car. I am thinking most people would be lucky if they kept their car to or past 100k miles. I figure that because just seems like many are the type to switch things up over time.
 

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It boggles my mind that tuners and their customers think that they can program a car more effectively than the engineers that designed and tested the car. Obviously, it's a game of optimization for power, efficiency, pollution, and reliability in a system that has to operate at different altitudes, temperatures, and fuel quality. I personally wouldn't want to trade one for the other.
 

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It boggles my mind that tuners and their customers think that they can program a car more effectively than the engineers that designed and tested the car. Obviously, it's a game of optimization for power, efficiency, pollution, and reliability in a system that has to operate at different altitudes, temperatures, and fuel quality. I personally wouldn't want to trade one for the other.
The factory tune maximizes consistent and reliable operation with significant engine protection. The tuners will change the mapping to push into areas the factory deliberately built in as operational safety cushions. Will this impact engine or drivetrain life - one persons guess is as good as another. Will it effect warranty - think that's pretty clear.

For me the 335d already has more than enough power. But then I was satisfied with my 193hp 328i. I'm already projecting that the rear ties will only last half as long as the fronts, and I'm not a particularly aggressive driver. I can't imagine anyone using the additional power a remap will give more than 0.001% of the time.

Just my 2 cents.
 
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