24th August 2012, 07:42
Fellow Member (>400)
I have the ESS SMG Tune on my M5, but I also had the VT2-650 installed at the same time, so it's difficult to say about the shifting time and lag, since it has almost 200 chp more to handle now.
However I can say something about the everyday performance and it's at least not worse than stock (euro spec). From what I have been told, this software is only a minor upgrade compared to late versions of BMWs stock euro spec software.
As I see it, there are a few ways to re-program it to shift quicker and all of them will result in more wear and tear. Either you do the physical gear shifts faster, using higher hydraulic pressure. Or allowing shifts at higher engine power output. Or do the clutch engagement/disengagement movement quicker, using higher hydraulic pressure. Or a combination of the three.
Edit: Less shifting time/quicker and more brutal shifts, WILL wear the components quicker. No doubt about that! One simple way of putting it, is that you have a given (fixed) amout of energy beeing transferred through the drivetrain when shifting. Transferring that energy in less time, will result in higher peak stress value AND higher peak temperature in the clutch (same amount of energy, but less time to absorb it evenly and to cool the surface). And we have seen evidence on the forum, showing that the stock cluch gets worn and damaged from high temperatures. Poor clutch function have been seen, even if it's not very worn down. Burn marks and spot oxidisation have been the cause of this. And they come from too high temperatures. Slipping the clutch at WOT and 4k rpm is no good either (as when using LC).
BMW M5 ESS VT2 SC (601 RWHP @ 99 RON)
Options (a selection of all 31 options)
Fully extended Merino black leather
BMW Individual Carbon black
BMW Individual Alcantara black headlining
BMW Individual Black piano paint trim
BMW Individual Shadowline
BMW Individual Tinted Windows
BMW Individual Silverstone II color rims
Climate comfort windows
Active sport seats
Radio Professional Logic7
All mirrors auto shade
PDC front and rear
Heated back seat
ESS Tuning VT2-650 (http://www.m5board.com/vbulletin/e60...60-m5-s85.html)
ESS Tuning SMG software
Lowtec Lowering springs (front) (http://www.m5board.com/vbulletin/e60...nd-e60-m5.html)
LED Exterior Lighting
LED Angel eyes (6000 k)
Xenon bulbs 50 W (6000 k)
Matt black kidney grilles
BBS lug bolts with Silverstone II paint
Custom painted wheel hubs
Full paint correction work (http://www.m5board.com/vbulletin/e60...polishing.html)
Paint top coat sealant (6 layers)
Glass treatment (6 layers)
Last edited by KennethH; 24th August 2012 at 09:57.