Race Start
The other thing that gets me sometimes is that I forget to go into sport handling mode. It's easy forget if you're rushing.
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The other thing that gets me sometimes is that I forget to go into sport handling mode. It's easy forget if you're rushing.
The Best of Mercedes & AMG
I can't wait to try RS with a TCU tune to see if it improves matters...
Withe respect to brake boosting, with TC all the way off, I'm releasing the brake as the RPMs are sweeping past 2K... and launching somewhere around the 2500 rpm mark.
Withe respect to brake boosting, with TC all the way off, I'm releasing the brake as the RPMs are sweeping past 2K... and launching somewhere around the 2500 rpm mark.

For race start, it's similar to a manual trans/dual-clutch launch: 1) it revs up with the clutch completely disengaged, 2) gradually engage the clutch to launch.
When you brake-torque, the clutch is engaged and you're rubbing the clutch plates together, which provides resistance and therefore allows your boost to build. It's more wear on your clutch but allows for better launches due to how relatively unaggressive race start's clutch engagement is. If you compare to, say, Porsche's launch mode, it basically dumps the clutch whereas our trans kinda feathers it out a bit.
For race start, it's similar to a manual trans/dual-clutch launch: 1) it revs up with the clutch completely disengaged, 2) gradually engage the clutch to launch.
When you brake-torque, the clutch is engaged and you're rubbing the clutch plates together, which provides resistance and therefore allows your boost to build. It's more wear on your clutch but allows for better launches due to how relatively unaggressive race start's clutch engagement is. If you compare to, say, Porsche's launch mode, it basically dumps the clutch whereas our trans kinda feathers it out a bit.




Traction completely off
suspension in C (you want the car to squat and load the rear tires more)
AC off (yes, in theory it is supposed to shutdown at WOT)
S+ performance mode
Brake boost to about 3k ( there is a feel and technique to master this. A bit of hit and miss. Sometimes it will want to stall out.. Need to catch it just right on the way up)
Of course peddle floored
release brake quickly while gas is smashed and keep it smashed.
do your run on a verified flat nice roadway. Use an altimiter to verify no incline or decline.
No windows or sunroof open
Keep steering and car as completely straight as possible. The slightest corrections cost 100ths.
Doing this with my Stage II Eurocharged tune + my UPD cold air intake consistently gets me 3.2 or better. When I pull my 75 pound sub out of my trunk I get can achieve the 3.0 !!!! 0-100 in 7.1 and 1/4 in 11.1
Hope this helps guys.
Cheers
Last edited by Vrodman; Apr 16, 2020 at 02:14 PM.





