Thats basically what i am 'an installer'. The company i am 'slaved' to receives the stock map from me an adusts to suit then send back to me to upload to the ecu. They have in house dynos and have written 1000's of maps so i have faith they know what they are doing. When i send the file i have to fill in a form with all sorts of info, reg, vin, various codes, milage etc etc.
Ecu remap causing faults. Thoughts?
- Thread starter BBT
- Start date
I get that it’s commission based. Again, as I said. BMW’s diesels really need someone who understands them. If the flow is too much for the injector(s), it’ll just shut the car down. If you had checked all tolerances, drove the car before hand etc then maybe you’d have noticed some issues.
I again suggest reverting the car back to stock file, and seeing if it starts. This is after bmw diagnose it and probably say it needs a new engine.
EDIT: Have bmw said that they’d revert to stock map to the customer? I imagine it won’t be cheap if they have and that the car isn’t in warranty or if the warranty would even stand if it had it in the first place as it’s been messed with.
Its all good and well saying the remap is fine, it probably is. But if the hardware isn’t then it will kill something sooner or later.
No, but has it gone well for millions of other cars? Yes!
Including a couple of mine.
And it's gone wrong for many other cars too.
A lot of diesels these days are high mileage. The hands they fall into are the lower end of the market. Parts have a certain life, when they are stressed more so than the manufacturer recommends then things break. They then blame the mapper.
I’ve been around the m57/n57 engine scene to know this. Similar for other cars but it’s not as simple as tuning software and making the car fast and reliable.
I’ve been around the m57/n57 engine scene to know this. Similar for other cars but it’s not as simple as tuning software and making the car fast and reliable.
Ive heard the m57 / n57 engines are known for throwing rods is that correct? People think they are as reliable ir strong as the 47's?
Only if you do crazy amounts of boost. But I know a car on stock internals doing 550hp/1000nm torque with water meth+nos. With no issues, daily driven m57. But the engines are very strong, the version in pre lci 535d even stronger than the later lci one.
Again, like I said it’s who you use and the cars health and if they understand that. I explain this to a lot of people but it goes on deaf ears. Then I have friends asking me why their cars have issues or turbos going pop.
My own 335d lci that I owned m57, did comfortable 385/550lbft on stock turbos, but without an r90 fuel pump you’d struggle to keep it at 400. It was a well looked after car and we were certain the turbos were replaced at some point. Healthy engine and refurbished gearbox the car was sorted and I had no issues. Though that is because I invested the time to learn, used someone knowledgable and asked every possibly question I could think of.
Before even tuning I made sure every thing was in order to support the tune I wanted.
A lot of these cars are old now.
I forgot to ask, you mention it was an eco map? Do you remember the fuel trim values, I wonder if the fuel values were taken down a tad too much so the car was under fueling and thinking it’s an injector at fault so it shut down? I’m struggling to think of what else can it be bar bad starter motor or anything that’s gone loose in the engine bay such as a connection.
Well a diesel supra wouldn’t sound good would it?
Well, their petrol equivalent.
BMW were happy with it, Toyota didn't think it was reliable enough and didn't survive their stress testing. So they started making the current one. Just goes to show the gap between what BMW think it's fine and what Toyota does.
This is my point really, he presented to me a car with 40k on clock and said its his baby well looked after etc etc... its only after the map and problem that i learn about the car being ex police, smashed and written off, bought at salvage auction BY HIM as he is a car dealer and it had 167k on clock. Because it was bought just before the 3 year old mark there were no previous mots to show milage so for its first mot he had bodywork done and colour change and milage was set to 18k.
What im saying is this is a well worked engine, so with him completely thundering it down a dual carriageway after remap and after the car standing with engine off for 2 hrs, thats gonna cause damage right?
Well a diesel supra wouldn’t sound good would it?
Why do I keep seeing diesel convertibles? (Normally Audi a3's)
FWIW, we've just had notification at work about our BMW x30d's and to stop driving them immediately (or limit how much you rag them - we got told to keep it under 100mph, no sport auto transmission and no high engine loads) as there is now a recall for the crankshaft bearing. Maybe the bearings have gone? They could have easily been on deaths door and then the extra strain of the map, and how the guy was driving it, finished them off?
Possibly, but the last experience I had with something similar was a neighbours car again an x5 but 4.0d turned out to be a failed injector but after ages it gave a crank.
I’ve spoke to the guy in the know and he said could be a loose cable earth or negative. Or even the connection on the starter motor being worn and just a massive coincidence. I hope it’s something simple as I can understand how you stand in this as being the blame guy.
I’ve spoke to the guy in the know and he said could be a loose cable earth or negative. Or even the connection on the starter motor being worn and just a massive coincidence. I hope it’s something simple as I can understand how you stand in this as being the blame guy.
Did a remapper beat you as a child?