I just returned from my first spin in the boonies since having FM springs and bumpstops put on my Koni Sports.
Jeez, why did I wait so long to do this?!
So far, I can't find any downside, just less motion over the road, a calmer ride, more control, and NO bottoming. On advice of other Koni users at miata.net, I left the shocks adjusted 1/4 turn from full soft, and they're fine. The Miata should have come this way from the factory.
On the drive, one of the roads was several miles of corners marked with
15- and 20-mph yellow signs, most with poor sightlines. Instead of the usual 7/10 commitment at 40 mph, tonight felt like 5/10 at 45 mph. Oddly, the car doesn't feel racy or particularly fast. It just gets the job done with minimum drama. SWMBO declared it "very nice."The FM springs' balance is very close to stock, but the rates are roughly double. I left the FM swaybars set as before (soft front, middle rear). It was time for a new alignment; I decided to go back to 0.5" camber bias, since the RE-11s are so stable I could use a livelier balance.
Camber: -1.25F, -1.75R Toe: 1/32" in per wheel Caster: 5.0°
Oh, that. Yes, the car is a bit lower, about 12.5" all around. It wasn't a motivation for me, but I'll live with it.