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08-19-2011, 04:23 PM | #23 | ||
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I might just go to Dinan
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08-19-2011, 04:33 PM | #25 |
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This is simply my own observation, and I sincerely do NOT mean any offense by this... but I do believe you are driving the wrong type of BMW. Based on your own description of your driving style, I'd like to whole-heartedly recommend that you trade-in your M3 for a 335d.
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08-19-2011, 04:41 PM | #26 | |
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08-19-2011, 05:31 PM | #27 |
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To all the people telling him to get a 335, etc, etc... MOVE ON.
it's a waste of space here. Who cares how he found out he car drove differently. Who cares if it putts around town at 20 mph in an M3 to drive .4 miles to work. Thats not the issue at hand. OP: Part of my post was not directed at you. I know you are just trying to understand what happened earlier. Part of it was geared toward those who said "You're luckly they didn't find your tune" - It's expected that they will not find your tune. The CEL was certainly caused by the malfunctioning sensor. You car is definitely back to stock now. The fact that they programmed CAS means they programmed every other control unit, erasing anything you had in your DME (engine control unit), and the other modules.
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08-19-2011, 05:50 PM | #28 | |
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08-19-2011, 06:12 PM | #29 |
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Hi Mike. Your input is appreciated, especially considering you know more than 99% of us here on this issue. I do have a question. You seem very confident that the dealer would not find evidence of a tune. Why is it that both Evolve and ESS have suggested that if there was a major issue with the engine and BMW investigated that they would be able to detect a tune. Maybe the distinction is that the dealer could not find it unless they had BMW involved? Anyway, if you could clarify it would be appreciated as other tuners don't seem to be as confident (or at least won't put it in writing here) that you would never have a warranty issue.
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08-19-2011, 06:28 PM | #30 | ||
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08-19-2011, 08:14 PM | #32 |
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08-20-2011, 12:46 AM | #33 |
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I guess to play it safe, a Dinan flash would be the way to go?
What companies offer a re-flash in case BMW Service brings a cars tune back to stock?
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08-20-2011, 01:09 AM | #34 |
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How is that safer? Dinan will warranty your engine if something happens as a result of their parts, but the dealership will not. You'll end up in essentially the same place as the OP, since the dealer is just as likely to void your warranty with Dinan as they are with Powerchip or any other brand.
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08-20-2011, 01:14 AM | #35 | |
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To answer your questions: If there is a major issue, it's always good to go back to stock. However, it's very unlikely that they would ever find an ECU tune as the culprit for whatever problem is at hand. What the OP experienced - a sensor error, is by no means a major issue. It happens all the time on bone stock cars. If BMW was involved and they did suspect foul play (which there is no reason to in the first place), there is potential that they could find out about it. It's not easy though and would require time and money investment on their part. It's sort of like chasing a goose. Unless there is something directly pointing to a flash, there is no reason to suspect it. A check engine light coming on is obviously normal operation if something called for it to illuminate. My CEL came on a few weeks ago and it turns out something hit my post cat 02 sensor under the car. Even though my car is programmed to ignore readings from that sensor, the sensor still has to be in good shape and intact or it will still throw a CEL. CEL's are supposed to be set for a reason, and the tunes retain all of this programming. Now, a different story all together, is a strange code being thrown, or an internal DME fault code which would indicate foul play. There are checks that the ECU goes through and if those checks are failed it will almost be a dead giveaway. Anything else is well within operating spec and you would want the light to come on if something is awry. Usually the dealer will just flash the ECU when they have no clue how to fix it, which wipes the tune out anyway. The only car I've heard of having it's warranty voided was a car in Singapore. The guy had a tune that he would not disclose and dropped a valve on the track. They refused to pay for the engine in this case. However, in the US, I honestly can't see something like this happening unless there was a clear indication that the tune caused issues. And if it worked for the first week, it will probably work for the life of the car. There is always the chance that incorrect programming could cause errors in different climates or conditions, but if you leave it to a professional, that should never happen. Going back to stock is an added layer of protection, but it's not really back to stock. There are flash counters that will be incremented, potentially a UIF write, and the program side of the ECU is locked from OBDII access, so to get around stuff like that you would need to bench program (BDM) the ECU. And that will leave physical signs of tampering which is even worse.. Also, the piece of mind that people get with a Dinan tune is a joke.. It's the same thing as with any other aftermarket tuner. It's ridiculous to say that a tune caused an issue with a car unless the programming is off. Drastic changes will cause this, and tuners that don't know what they are doing and hunt around and go "Oh, maybe this is it, let me try to modify this", instead of having the proper files which indicate what these locations actually do, and how they affect other ECU functions. Downgrading to an earlier software version is more of a giveaway, however, this can be a difficult one too for them to notice depending on whether or not the UIF is written to the car. The UIF is a 'directory' of software revisions the car is programmed with. I can write files all day long without writing the UIF and it will appear that the original software version was still in there even though the code has been modified. It comes down to how much BMW wants to invest in denying a claim. If there is no reason to suspect a tune (as there shouldn't be), warranty coverage shouldn't be an issue. OP: If you'd like to be re-tuned on our latest software version which contains some new power adders, let me know. The cost will simply be the re-flash fee, and you will get the latest and greatest programming. Totally up to you. I can check the software versions and make sure everything is up to date (ista 42.2). If something is not up to date, I can update it to the latest BMW version. The good thing about it is that I can do it selectively, which the dealer can not do. It's either all or nothing on their systems. There is a programming part and a coding part. Even if the dealership programs one module, they have to code the rest of the car. So if they programmed your ECU, the CAS gets recoded anyway which is why you lost your door locking functions. See the coding list in my signature. Hope this helps..
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08-20-2011, 04:50 AM | #36 |
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That is great explanation and much appreciated.
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08-20-2011, 09:55 AM | #37 |
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Thanks Mike.
Yeah I would guess BMW always programmed the car to stock if they can't find out what happened to the car. It's one of their trial and error solutions. Unfortunately enough, I am the victim in that. Mike, I will have to see about reflashing my car because I have to transport the car soon to Vegas. Maybe I will see you in Cali in a few weeks time? On a side note, I never know Dinan tune will void your warranty too? I thought it is supported by BMW.
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08-20-2011, 10:22 AM | #38 | |
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I have a evolve tune and some custom coding I did myself. I always know there is a chance I will have to re-do the work if the dealer needs to reflash the car. |
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08-20-2011, 10:34 AM | #39 |
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Do you guys think I can prevent them from flashing the car back to stock if I tell them not to? This is because I don't want them to screw up my custom codings such as door unlocking and the coded LCI tail lights. I think my LCI tail lights are now back to blinking again when I start the car
I am sure the dealership knows I coded the car because of the doors unlocking by itself. But I think this is fine since they never made a big deal out of it? I had serviced my car there for at least 5 times now and they were okay with it. It was only the latest visit that made them suspect I did a tune because of the faulty sensors
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08-20-2011, 11:01 AM | #40 |
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Thanks, I will do that in the future.
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08-20-2011, 12:13 PM | #41 |
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I think its $150 to get it flashed back once you're in the system for paying the full price previously
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08-20-2011, 12:51 PM | #42 |
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So this is really not funny. My trunk can't be opened now. When I tried to unlock, it made two/three clicking noises and it can't be opened. Now my dashboard tells me that I did not close the trunk completely. Anyone has this issue happened to them before? If it helps, I am using Vorsteiner trunk, don't know if it can cause this issue. Might try to video it and put it here. I am going to call my SA and have it checked again
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08-20-2011, 01:10 PM | #43 |
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I forgot dealer is closed at this time. Got to wait till Monday to have it resolved I'll always tell the dealer from now on not to do anything to the software. I hope you guys do the same too.
Here's the video:
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