The original idea for Supermiata back in 2009 was a forced induction car. When we finally put the series together in 2013, we started with a simpler, lower cost N/A build to lower the barrier
of entry. The current car is technically an S2 though we never refer to that class designation in public. With S2 participation starting level out (~22 cars built), we decided it's time to start prepping for the launch of S1 in 2017. That involves building a few S1's now and racing them as a demonstration class just ahead of the normal Supermiata start wave during the remaining races of 2016. Currently, 4 drivers have committed to building S1's this year. Those are the same drivers that fill most of the podiums of the current races so the playing field in S2 will get a bit more level starting with the September Buttonwillow event. 949 Racing's S1 will debut there.
S1 technical details
Unless otherwise specified, the car is basically the current S2 with some nice upgrades. In short, it's a 200whp turbo Miata with a big rear wing and fatter tires. Our estimate is that S1 will be roughly 5s faster than S2 at most tracks.
Figure 1:55's at Buttonwillow 13 CW in good weather. Like the current S2 class, power, torque and area under the curve will be capped.
-Forced induction will be a spec kit provided by Trackspeed Engineering employing a Borg EFR 6258 turbo and TSE cast stainless manifold
-ECU will be limited to Megasquirt based software
-6 speed transmission allowed
-APR Performance GT250
or similar will be the spec wing type
- 4" splitter
-Spec tire will be the 245/40/15 RC-1 on any wheel width. Many will opt for 15x10's
- NA chassis will be allowed bolt or rivet on flares to clear the bigger tire
-Target power is roughly 200whp, 190lbs torque
-2300# min weight (same as S2)
-Front brakes will be a spec 11" or 11.75" Wilwood kit, drivers choice
-Conversion from a well prepped S2 to S1 will cost most drivers about $10k.
More detailed info in this thread: Supermiata S1 - New turbo class for 2017
Rough idea of the are package: