Brian wrote:SCCA Autocross Day testing RF RS springs, 300 front/200 rear. Last event without limited slip, this event with factory limited slip. There were moments I regretted not doing an OSGIKEN in this car but given that this is my wife's daily driver and not built for competition the stock limited slip we added is effective enough for the mission of this car. Last event I had to tip toe around the course, frustration was constant. This time I was able to lay power out of tight turns much better. I still spun the tires, but this time it was both tires instead of just the inside wheel. Fun and faster and I could throttle rotate more effectively as needed. Balance of the springs continues to feel great in the RF, had the KONI shocks full stiff front. Started full stiff rear for KONI but oversteer was a bit much with the 200 hp supercharger and current sway bar settings (soft front, middle rear) so I backed it down half a turn and went faster, backed it another half a turn and went faster again with more effective rear hook up. Could have also got down and changed rear sway to soft to better match the front but didn't bring the tools and towel to get that done neatly at the event.
Does your wife's car still have the RS springs or did you switch them back to the Progress springs? If so, what has been her response to the stronger springs?
That is my dilemma, I have added the RS SB which took a good amount of the body roll, but I still want to improve the transition from left to right with stronger springs and perhaps to lower the car just a bit, around 1/2" at most. The new Koni shocks has my eye so it boils down to either the RS or Progress springs. The 2016 GT AT is a weekend driver with occasional autocross and annual mountain driving trips. My wife is quite sensitive to harsh rides and lowering the car.