I still need to pull the front shocks and send them to DSE for a dyno session. I just ran out of time. After RTTC is was left feeling the front end was still soft. I have the compression cranked 23 of 24 and it still rides beautifully. Anyway, when I got to RTTC I had changed all the springs and you really don't know what you have until you go 100%. I started out with a tight chassis. (Front pushing) On the autocross I kept tuning in more and more compression and rebound. I ended up with 11 of 16 clicks to get the car to loosen up and rotate better. The problem is, the car gets pretty rigid back there with those shock settings. It felt pretty good in the autocross but was still to tight in my Sunday run on the road course. From what I've read, you don't want to adjust shocks to the extreme to balance out your chassis. When I switched from R888's to BFG's last year, the car went from good to ice skating. I had to take the rear bar off the car to get it to handle. Now that I've changed all the spring rates, I feel it may need a bar back on the rear to balance it out. I ordered a weaker rear bar from Helwig and will put it on for the event next Sunday. My hope is to get the rear shocks in a more compliant setting and raise the spring rate with the weaker sway bar. If I'm close, I'll play with tire pressure and mild shock settings to dial it in. If the front shocks are found to be weak, new shocks will only tighten up the chassis. I may be pulling the new rear bar on the lunch break.
The bottom line is I have the car back to where I feel it's a little faster than it was on R888's. The barometer is really my memory of how the car felt and running within .9 of David Pozzi in Bad Penny on the road course at RTTC.
Soon I'll be switching to a full floater out back or a floating caliper. Likely this Summer after a few events.