If you're unlocked for ecutek, you -should- be able to go to BM3/MHD though. The other way around isn't the same. Ecutek writes to a different area of memory on the ECU for the license stuff -in addition- to the bit of memory that holds the calibration tables..
To clarify, as I understand it...
I feel like understanding your powerband can give you a real advantage over the guy in the other lane. Plenty of folks are shaving tenths off by understanding their powerbands better and shifting at ~5600-5700 vs 6000.
Yup. I'm selling this stuff - I don't need it, but wondering if you were an outlet for a harness. I can make one (I can source all the connectors, and am good with a soldering iron/cabling) but I wouldn't want to go through all that for stuff I'm selling.
If you didn't know, former member of ours (and the owner of the car I modeled mine after), @Huddleston, organizes some of the best driving experiences in the country. They are multi-day driving experiences filled with awesome people and a ton of driving. There is more information here on the...
There is measurable lag in the 800 and 850, you can see it on any log file. Full spool for the 800 is at least 300-400rpm more than on the stock turbo.