Originally Posted by jtd lover
Just thought I'd pop in and have a look.....
No we're not related to Angel in any way, Angel is a completely separate company with its own software.
Regarding detectability, Alfa has no software which is able to view the file in any 2d, 3d or hexidecimal manner. The EDC16 ECU's have constantly changing checksums which means they can't compare checksum values like you could with EDC15 as they never stay static. OBDII adds to the flash counter on the ECU which is one way of detecting.... but we dont use this method for EDC16C38/39 ECU.
Cheers
Graham
Celtic Tuning
OBDII flash does add to the flash counter however there are OBDII tools that reset the flash counter meaning it can be even less detectable as you don't need to crack open the ECU to BDM it.
The checksum statement is partially incorrect as the only data that changes is the data in the EEPROM memory area for adaptation. The main binary is static Which is why the checksum needs to be calculated correctly with EEPROM, EPROM and processor content, sometimes this is bypassed by using helper checksums or patches.
A main dealer could detect any remap by simply datalogging of any changed perimeters or the changes they've produced. Anyone claiming undetectability is being very naive.