Remapping Softwear/Equiptment
Remapping Softwear/Equiptment
25-02-2009, 02:44 PM
#9
Just to clarify in case all the pisstake replies havent helped the OP out yet:
There is no cheap setup that Im aware of that will remap ALL cars.
So please list the cars you wish to map, and we may be able to give you options for some or all of them.
For example Evo's can be done pretty easily on a cable, cossies really you need an emulator and its still not pleasant, and some cars like a 205gti you essentially cant do at all with any equipment.
There is no cheap setup that Im aware of that will remap ALL cars.
So please list the cars you wish to map, and we may be able to give you options for some or all of them.
For example Evo's can be done pretty easily on a cable, cossies really you need an emulator and its still not pleasant, and some cars like a 205gti you essentially cant do at all with any equipment.
26-02-2009, 06:25 AM
#10
If you want to do performance cars then I would advise that you get some more specific tuning knowledge and tooling to suit such as Wideband fuel monitor and detcans as a starting point. We also often use EGT and various thermocouples too, depending on the tune in question.
An emulator only works on some systems with most modern ones being impossible to emulate, but older ones with the right equip are as easy, or easier, than most standalone systems. Please beware of people offering live maps on most modern ECU's as its impossible.
Be aware that most systems will cost you for every tune you do, prices vary for calibration decoding but expect to pay between £30 and £100 per car fro some of the bigger companies. This can be avoided once you understand the systems well enough to code in hex or 2d, but I'm presuming that right now you don't.
Once the file is done you need to buy a checksum module for your system that will allow you to checks the file back to what the ECU needs to see for it to be satisfied the file is standard and allow the car to actually run. these are ECU type dependent and expect to pay anything from £100 to £1000 depending on ECU type and its technological standing in the industry.
I cant really give you any more info until I know what you need to do as if you just want to sell other peoples remaps like my installers do then that is a totally different ballgame and much easier so the info I have just given you is allready pointless, so please clarify.
Last edited by Stu @ M Developments; 26-02-2009 at 01:30 PM.
26-02-2009, 03:08 PM
#14
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You must examine the routine that does the check against the stored checksum.
Obviously, you need to know the following...
1) Where the stored checksum(s) is/are stored.
2) Where the routine(s) are that calculate them to compare against.
People who provide mapping equipment would have reverse engineered the program itself to find these.
Some dont bother and just make sure the memory map sum adds up to teh original total binary checksum before any modifications to the map data are done.
However, the ecu makers are getting more clever using Recursive CRC type sums and hash alogorithms to hide the data.
No system is secure but it is getting harder to do in both complexity and time.
Obviously, you need to know the following...
1) Where the stored checksum(s) is/are stored.
2) Where the routine(s) are that calculate them to compare against.
People who provide mapping equipment would have reverse engineered the program itself to find these.
Some dont bother and just make sure the memory map sum adds up to teh original total binary checksum before any modifications to the map data are done.
However, the ecu makers are getting more clever using Recursive CRC type sums and hash alogorithms to hide the data.
No system is secure but it is getting harder to do in both complexity and time.
26-02-2009, 03:11 PM
#15
Thats what I would imagine, that they will eventually make it difficult enough that it become prohibitive to cracking or working around it for people unless they know they are going to sell a LOT of the checksums to the fellas like Stu doing the basic mapping bits and pieces.
Certainly not a DIY'able thing I would imagine
Certainly not a DIY'able thing I would imagine
26-02-2009, 03:25 PM
#19
Its cheaper to just buy the pikey version for each car I believe, half a dozen of them at 100 quid a pop (or far less in some cases) is for nothing really, I dont think there is ANY generic fault code reader that is cheap enough to rival that.
26-02-2009, 03:28 PM
#20
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@ Pikey version...What sort of ones are good tho Chip? Easy to read/use? I don't mind spending the cash on something worth while, but don't want something that will crash and corrupt the car its plugged into.
26-02-2009, 04:46 PM
#23
You must examine the routine that does the check against the stored checksum.
Obviously, you need to know the following...
1) Where the stored checksum(s) is/are stored.
2) Where the routine(s) are that calculate them to compare against.
People who provide mapping equipment would have reverse engineered the program itself to find these.
Some dont bother and just make sure the memory map sum adds up to teh original total binary checksum before any modifications to the map data are done.
However, the ecu makers are getting more clever using Recursive CRC type sums and hash alogorithms to hide the data.
No system is secure but it is getting harder to do in both complexity and time.
Obviously, you need to know the following...
1) Where the stored checksum(s) is/are stored.
2) Where the routine(s) are that calculate them to compare against.
People who provide mapping equipment would have reverse engineered the program itself to find these.
Some dont bother and just make sure the memory map sum adds up to teh original total binary checksum before any modifications to the map data are done.
However, the ecu makers are getting more clever using Recursive CRC type sums and hash alogorithms to hide the data.
No system is secure but it is getting harder to do in both complexity and time.
26-02-2009, 05:54 PM
#24
Testing the future
26-02-2009, 06:20 PM
#25
PassionFord Post Troll
i just bought a decscan,,, seems good and fast compared to snap on solus, and also programs ecu's,keys etc on most cars,,, they recon its dealer level for european cars,
also got a carman scan, and the ids which is dealer ford/jag/landrover/mazda.
if i was going for one to do most stuff it would be the decsan!!
26-02-2009, 11:04 PM
#26
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ForeignRS, thanks mate. Watching it on EBAY and will do some research
Andrew, where could I buy them? and how technical are they to use? I have knowledge, but it is limited
Andrew, where could I buy them? and how technical are they to use? I have knowledge, but it is limited
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