Finally had the time to tune the E63 we had as a guinea pig and it turned out pretty well. I was tuning it remotely so will need to get back into the dyno pc and screenshot the before and after numbers but it did gain a good 18-22whp all over and 10wtq below 3000rpm which always help.
HP TUNERS works flawlessly and the write time is impressive! I used Dimsport My Genius before and it took around 5-10mins to complete the write and reset the ECU. HP TUNERS did it in 45secs!
One thing though is the fuel adaptives. With the car running in closed loop the whole time, I felt it was similar to tuning the Mopar vehicles with their forever waiting fuel trims to react. It would really help out a lot if we can get a fuel reset adapt.
I know a lot of people are against backfiring on cars, but it was at customers request and looks pretty amazing for AMG to shoot out flames.
Take a look at the link to see what I mean lol
https://www.instagram.com/p/BNdZG3phCRg/