ecu
i have used an one of these cheap programmers many times its simply an eeprom reader /writer, granted you may purchase a melon and thats where the expensive programmers shine through,with quality control. The thing that i would say is this, unless you are good at reading/writing to eeproms, have a realy good understanding at reading and altering files,then simply leave it to someone who does. Another important thing is, save your uploaded file because more often than not if your flash fails you can simply erase and re-write to your eeprom.Ive built many eeprom programmers and they are a simple peice of kit, and the one i bought for remapping i opened,and could have build for about 30 quid,the other key thing ,a lot of people just buy the dumps but really dont have a great knowledge of tuning,ive been in the garage game for 27 years, and when i remap ,i save the original files,copy them,then modify them myself,with constant corrections throughout the tuning process.If you know how it works then it helps when you have to diagnose it.
And lets not kid ourselves,its prob the same people in the same country making both the expensive and cheap programmers.
the software is the expensive part, put it this way , i would rather someone with great knowledge,cheap programmer working with me,than having someone with no knowledge and the most expensive programmer.
If in doubt leave it out.
thanx for having me guys.