JET's 335Xi

[JET]

The dealership flash is junk, adds 20hp for over $1k. Dinan is the same. Cobb leaves traces in the ECU that BMW can find even if you unflash it, is way more expensive than the JB4 and doesn't produce quite as much power even with a protune, stock maps are way down on power. JB4 has guage hijacking too which is cool (I can put boost, timing, AIT's, EGT's or whatever on the fuel and oil temp gauges). JB4 can also make all changes on the fly, including map changes, through the steering wheel buttons.

I checked out all the options before I decided on JB4 and I am really happy with it. After doing it once my install and uninstall time will probably be about 20 minutes so it isn't a huge deal.

If you were talking about the tranny flash, that is not available anywhere except to do it yourself. Normally it shows DS on the dash for sport mode but this puts the software from the Alpina B3 on it and is shows what gear you are in, S1, S2, etc. They would definitely notice that. I guess it just adds another 10 minutes in to my install and uninstall routine when I have to go to the dealer, which isn't often. Oil change is about every 10k miles. I might talk myself in to this yet :P