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Originally Posted by widetyres
TBH looking at this again now, I think that was probably a mistake; I have rechecked the module part numbers and it was GHAS part IDs that changed significantly, however, it states that they are backwards compatible. The DSC parts have been revised a number of times, but all look compatible.
Further to that post, the M2CS Racing option (F087GTS) should now be available to you (if you have a new enough ISTEP), which is the option I would go for (over M4GTS) - I haven't tried this yet as I need to update my car, but many have.
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I don't suppose there is a thread on the F087GTS coding? I'm wondering how well would that work since the M2CS Racing has a purely mechanical differential. Also my car is one of the earlier builds 08-2018, I don't know which ISTEP I have but the dealer has been trying to get me in to update the software which I've been reluctant to do since I heard the 2019 build cars are locked out from being tuned.
Quote:
Originally Posted by widetyres
I also have AST5100!  Great choice! Love mine.
How have you got yours setup? - I think that what you are feeling is more down to that than the ELSD. It took a while, but I settled on the rear needing to be 2-clicks harder than the fronts. I think I am currently at F7:R5 clicks (from full stiff), but TBH it doesn't matter how many clicks you are running, it is the 2-click differential front to rear that is the important point, as that helps shift some weight to the front to aid turn in grip.
Running the above clicks, with GTS coded GHAS & DSC gives exceptional drive into/out of the corners and the car can yaw on throttle input alone. TBH, IMO the stock suspension doesn't have the grip to run the GTS GHAS as the rear becomes way too keen to oversteer - the AST sorts out the balance nicely. |
Yes the AST are amazing, while the stock suspension was quite a mess on the soft springs with all the body movement. Especially with the 2NH brakes which are standard here in North America, after putting aftermarket brakes pads in the front end is completely squatted braking into a corner lifting up and loosening the rear.
I actually did have it with a 2-click differential, F -2 and R -4 from full stiff but I found the car still understeered a little so I went to F -3 and R -4 where the car feels more neutral on turn in. It seems like the car isn't really yawing as much as it did on the stock suspension and the throttle modulation is not as reactive. There was a time where I was mid corner applying throttle to rotate the car but nothing really happened until I exited the corner and all of a sudden the wheels started spinning and the car went sideways.
Quote:
Originally Posted by widetyres
I do not know, but I suspect that DSC off is the same on all models. However, there are driver "aids" built into the ELSD that cannot be turned off at all, so it's very likely (especially with track driving) that they are interfering a bit.
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I was just thinking with the M4 GTS flash maybe the threshold parameters would be higher overall across all the driving electronics since the car would think it is a GTS car.