When we're talking about DMS FOC reprogramming, some guys were sceptical!...
At least, we paid it (for good indeed), but what we'repromised is what we get every single time, our car needs a BMW re-flash....
To be true, I wouldn't bother even writing for the 90$ you're talking about, because
1) It's indeed a time consuming job that has to be paid (one way or the other...)
2) 90$ for 1,5 hours + commitment of specific hardware to a single car isn't that much for,
3) a car that costs a thousand times more and what you get is a refreshment of its ECU and a good performance upgrade from a reputable tuner.
Maybe you could save your 90 bucks from somewhere else... Gas perhaps?
08/2005 E60 M5 A30/LKA9/4MK
DMS ECU Upgrade, Eisenmann Sport Exhaust,
Supersprint X-Pipe, BMC Filters, Onyx 35 & 20 tint, Recaro Young Sport child seat