BoP Labbeta

BoP Lab / Sebring International Raceway

STL at Sebring International Raceway

Class · click a class to switch, + to compare alongside
Events

2 laps are left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.

PosCarDriverClass#LapTheoreticalQualRace5-lap stintConsistencyTrapS1S2S3
1Mazda Miata (1999)Christopher ChildsSTL72:08.064 D-P2:07.9222:32.201 A-Q12:30.311 A-R22:31.169 A-R2+1.555 A-R2128.9 D-P38.042 D-P44.037 D-P45.843 D-P
2Mazda MX-5Danny SteynSTL92:24.667 C-R22:23.8602:25.235 C-Q22:24.667 C-R22:25.200 B-R2+0.475 B-R2116.3 D-R142.561 B-R249.843 C-R251.456 C-R2
3Honda CRX (1991)Jose Osiris PenaSTL199, 12:24.771 B-R22:23.8422:27.749 A-Q12:24.771 B-R22:26.042 B-R2+1.725 B-R2120.5 B-R242.332 B-R250.422 B-R251.088 B-R2
4Honda CRX Si (1990)Joe MoserSTL362:25.054 C-Q22:24.5442:25.054 C-Q22:25.060 C-R22:25.455 C-R2+0.981 C-R2119.6 C-Q242.966 C-R249.745 C-Q251.833 C-R2
5Acura IntegraMike Taylor 2+ carsSTL392:27.045 B-R22:26.6452:33.492 B-Q2:27.045 B-R22:28.196 B-R2+1.324 B-R2117.4 B-R242.472 B-R251.622 B-R252.551 B-R2
6Toyota 86Olivier Jean Francois >115%STL1892:28.654 D-Q22:28.6092:28.654 D-Q22:30.119 D-R22:30.705 D-R1+0.683 D-R1114.7 D-Q244.138 D-Q251.416 D-Q253.055 D-Q2
7Acura Integra R (1998)Jon Sewell >115%STL482:28.731 B-R22:27.4482:29.336 D-Q22:28.731 B-R22:29.670 A-R2+0.793 A-R2118.8 D-Q243.036 B-R251.374 D-Q153.038 B-R2
8Mazda MX-5Thomas Annumziata >115%STL1722:28.846 D-Q12:28.4252:28.846 D-Q12:29.400 D-R12:30.527 D-R1+2.494 D-R1111.4 D-R144.031 D-Q151.203 D-Q153.191 D-R1
9Mazda Miata (1999)Amy Mills >115%STL37, 1142:28.961 B-R22:28.4782:30.043 D-Q22:28.961 B-R22:30.537 B-R2+2.673 B-R2115.0 C-R243.248 B-R251.825 D-Q253.405 B-R2
10Mazda Miata (2004)Mathias Ramirez >115%STL412:28.961 B-R22:28.4642:33.227 B-Q2:28.961 B-R22:30.217 B-R2+1.588 B-R2112.1 B-R243.072 B-R252.379 B-R253.013 B-R2
11Honda CivicMike Taylor 2+ cars >115%STL392:29.447 D-R22:29.0762:30.474 D-Q22:29.447 D-R22:31.336 D-R2+2.313 D-R2116.1 D-R144.119 D-R251.866 D-R253.091 D-R2
12Mazda MiataJustin Elder >115%STL192:29.826 B-R22:29.7702:32.880 C-Q22:29.826 B-R22:30.829 B-R2+2.688 B-R2113.2 B-R243.538 B-R252.722 B-R253.510 B-R2
13Mazda MX-5Thomas Annunziata >115%STL1722:29.863 D-P2:29.479110.2 D-P44.208 D-P51.409 D-P53.862 D-P
14Mazda MX-5Jaden Lander >115%STL042:30.259 D-Q12:29.8152:30.259 D-Q12:30.796 D-R12:31.608 D-R1+1.561 D-R1112.9 D-P44.564 D-Q151.833 D-Q153.418 D-R1
15Acura Integra R (1998)Zsolt Ferenczy >115%STL182:30.430 A-R12:29.6962:31.898 A-Q12:30.430 A-R12:31.429 A-R1+1.994 A-R1113.6 A-R1, A-R243.914 A-R152.770 A-R253.012 A-R1
16Mazda MX-5 (2006)Noah Harmon >115%STL1152:31.219 C-Q22:30.8922:31.219 C-Q22:32.209 C-R12:32.648 C-R1+0.704 C-R1111.9 C-Q2, C-R144.554 C-Q252.383 C-Q253.955 C-Q2
17Mazda Miata (2003)Thomas DiCandido >115%STL012:31.652 C-Q22:30.5112:31.652 C-Q22:32.314 C-R12:32.767 C-R1+0.841 C-R1111.9 C-R244.753 C-R251.808 C-R153.950 C-Q2
18Mazda MX-5 (2006)Aryton Grim >115%STL552:31.789 B-R22:31.0872:31.789 B-R22:32.864 B-R2+1.866 B-R2113.5 B-R244.071 B-R253.013 B-R254.003 B-R2
19Mazda MX-5Adam Gonzalez >115%STL1872:31.962 B-R22:30.9862:37.039 B-Q2:31.962 B-R22:32.761 B-R2+2.489 B-R2113.0 B-R244.247 B-R252.663 B-R254.076 B-R2
20Mazda MX-5Corbin Collins >115%STL202:32.170 B-R22:29.6095:06.406 B-Q2:32.170 B-R22:32.886 B-R2+1.420 B-R2113.3 B-R244.316 B-R251.415 B-P53.878 B-P
21Mazda Miata (2000)John Elder >115%STL20, 212:32.201 C-R22:30.8492:33.727 C-Q22:32.201 C-R22:32.640 C-R2+0.965 C-R2114.3 D-R244.775 C-R252.212 D-P53.862 D-P
22Mazda MX-5Jack Murchison >115%STL582:32.307 B-R22:31.5002:36.404 B-Q2:32.307 B-R22:33.121 B-R2+2.078 B-R2113.0 B-R244.177 B-R253.026 B-R254.297 B-R2
23Mazda Miata (2001)Thomas Paolino >115%STL134, 342:32.862 A-R22:32.4832:36.210 A-Q12:32.862 A-R22:33.299 A-R2+0.653 A-R2111.3 B-P44.580 A-R253.626 A-R254.277 A-R2
24Mazda MX-5Ryan Harrison >115%STL472:33.226 D-Q22:32.0562:33.226 D-Q22:33.465 D-R12:34.122 D-R1+0.853 D-R1120.2 D-Q244.884 D-Q252.503 D-Q254.669 D-R1
25Mazda MX-5Chris Clarke 2+ cars >115%STL1092:33.477 B-R22:32.9682:37.258 B-Q2:33.477 B-R22:34.730 B-R2+2.319 B-R2110.7 B-R245.041 B-R253.528 B-R254.399 B-R2
26Toyota Celica (2000)Javier Vento >115%STL162:33.698 C-R22:33.0982:34.571 C-Q22:33.698 C-R22:34.146 C-R2+1.580 C-R2112.5 C-Q245.168 C-Q252.796 C-R255.134 C-R2
27Mazda MX-5Adrian Comstock >115%STL52:34.394 B-R22:33.4812:37.715 B-Q2:34.394 B-R22:35.240 B-R2+1.095 B-R2111.8 B-R245.024 B-R253.632 B-R254.825 B-R2
28Acura Integra (1994)Pedro Colon >115%STL502:34.555 C-R12:33.9652:36.033 C-Q22:34.555 C-R12:34.834 C-R1+1.108 C-R1110.4 D-R146.190 C-R152.904 C-R154.871 C-R1
29Mazda MX-5Whitfield Gregg >115%STL172:36.441 B-R22:36.4412:41.899 B-Q2:36.441 B-R22:39.692 B-R2+4.759 B-R2109.7 B-R245.891 B-R254.824 B-R255.726 B-R2
30Honda S2000 (2003)Darrel Stein >115%STL1692:36.529 A-R22:36.0032:36.529 A-R22:37.863 A-R2+2.652 A-R2113.0 A-R246.529 A-R253.729 A-R255.745 A-R2
31Mazda MX5 (2015)Javier Sanchez >115%STL792:36.829 A-Q12:36.1272:36.829 A-Q12:37.529 A-R12:38.433 A-R1+1.374 A-R1107.0 A-Q1, A-R145.505 A-Q154.705 A-R155.917 A-Q1
32Mazda Miata (1999)Miximillian Opalski >115%STL1212:36.999 C-Q22:36.7172:36.999 C-Q22:37.749 C-R12:38.792 C-R1+1.623 C-R1105.2 C-R146.724 C-R153.978 C-Q256.015 C-Q2
33Mazda Miata (1999)Theodore Cahall >115%STL1822:37.074 C-R12:37.0602:41.809 D-Q12:37.074 C-R12:38.262 C-R1+1.733 C-R1107.2 C-R146.411 C-R154.319 C-R156.330 C-R1
34Mazda MiataYiannis Tsiounis >115%STL892:37.213 D-P2:37.0302:38.200 D-Q12:38.204 D-R12:40.054 D-R1+2.560 D-R1106.4 D-R146.411 D-P54.504 D-P56.115 D-R1
35Mazda Miata (1999)Mike Ryan >115%STL12, 120, 1192:37.333 A-R22:37.0582:39.534 A-Q12:37.333 A-R22:37.739 A-R2+0.564 A-R2105.4 A-R245.847 A-R255.200 A-R256.011 A-R2
36Mazda Miata (1999)Max Schweid >115%STL992:37.397 C-Q22:37.2192:37.397 C-Q22:37.686 C-R12:38.826 C-R1+2.259 C-R1105.2 C-R146.520 C-R154.367 C-R156.332 C-Q2
37Mazda MiataTodd Buras >115%STL562:37.469 D-R12:36.2402:37.469 D-R12:38.539 D-R1+2.114 D-R1106.3 D-R146.480 D-R154.105 D-R155.655 D-R1
38Mazda MiataRafe Abdulali >115%STL132:37.592 B-R22:36.8252:41.269 B-Q2:37.592 B-R22:39.228 B-R2+3.055 B-R2105.6 B-R245.717 B-R255.293 B-R255.815 B-R2
39Mazda MX-5 (1999)Dexter Czuba 2+ cars >115%STL1002:38.039 C-Q22:37.2552:38.039 C-Q22:38.168 C-R12:38.508 C-R2+0.719 C-R2105.7 C-R246.571 C-R254.504 C-R156.180 C-Q2
40Mazda MiataZach Ehrlich >115%STL1802:38.113 B-R22:36.7032:41.948 B-Q2:38.113 B-R22:39.120 B-R2+1.937 B-R2103.8 B-R245.428 B-R255.389 B-R255.886 B-R2
41Mazda MiataDexter Czuba 2+ cars >115%STL1902:38.231 B-R22:37.4172:44.471 B-Q2:38.231 B-R22:39.262 B-R2+2.227 B-R2106.1 B-R245.853 B-R255.748 B-R255.816 B-R2
42Mazda MiataMax Ehrlich >115%STL1812:38.246 B-R22:37.4732:40.087 B-Q2:38.246 B-R22:39.681 B-R2+3.082 B-R2104.8 B-R246.184 B-R255.529 B-R255.760 B-R2
43Mazda MiataSteve Wickersham >115%STL822:38.249 D-Q22:37.3452:38.249 D-Q22:39.083 D-R12:40.184 D-R2+1.778 D-R2109.5 D-R146.504 D-Q154.665 D-P56.176 D-Q2
44Mazda MiataDaniel Williams >115%STL382:38.459 D-Q12:38.4592:38.459 D-Q1103.4 D-Q246.471 D-Q256.086 D-Q256.553 D-Q2
45Mazda Miata (1999)Chris Clarke 2+ cars >115%STL1092:38.590 C-Q22:38.4012:38.590 C-Q22:38.919 C-R12:39.767 C-R1+1.267 C-R1105.3 C-R247.071 C-Q254.688 C-R156.642 C-Q2
46Mazda MiataBoris Said Jr >115%STL132:38.602 D-Q12:38.1392:38.602 D-Q14:10.981 D-R1104.3 D-P47.071 D-Q154.617 D-Q156.451 D-Q1
47Mazda MiataGreg Sorg >115%STL712:39.543 D-R12:38.5672:40.643 D-Q12:39.543 D-R12:40.585 D-R2+2.016 D-R2104.5 D-Q246.638 D-Q155.539 D-R256.390 D-R1
48Mazda MiataIsabella Abreu >115%STL112:39.881 B-R2sector data unreliable2:44.173 B-Q2:39.881 B-R22:42.483 B-R2+6.645 B-R2114.8 B-P45.11951.63055.728
49Mazda MiataBen Bettanhausen >115%STL952:40.346 D-R22:39.0362:44.758 D-Q12:40.346 D-R22:41.359 D-R1+1.098 D-R1106.0 D-R147.098 D-R155.251 D-P56.687 D-R1
50Mazda Miata (1999)Humberto Porrata >115%STL1182:40.660 C-R12:39.9272:42.199 C-Q22:40.660 C-R12:45.707 C-R1+2.784 C-R1103.4 C-R147.421 C-R155.526 C-R156.980 C-Q2
51Mazda RX7 (1990)Mark Keefer >115%STL91, 92:40.813 A-R12:39.7102:42.343 A-Q12:40.813 A-R12:41.771 A-R2+1.250 A-R2109.1 A-R246.240 A-R156.199 A-R157.271 A-R2
52Mazda MiataMiles Hewitt >115%STL117, 162:41.008 B-R22:40.3032:42.854 B-Q2:41.008 B-R22:41.672 B-R2+2.125 B-R2103.7 B-R246.422 B-R256.520 B-R257.361 B-R2
53Mazda Miata (2000)Jeremy Goldberger >115%STL155, 552:41.116 A-R22:40.2872:43.437 A-Q12:41.116 A-R22:42.066 A-R2+1.427 A-R2102.7 A-R246.598 B-R256.559 A-R257.130 A-R2
54Mazda Miata (2000)Jack Gold >115%STL552:42.225 D-R12:41.8502:44.144 C-Q22:42.225 D-R12:42.686 C-R2+1.085 C-R2102.8 D-R147.743 C-R256.027 D-R158.080 C-R2
55Mazda MiataWarren Sackman >115%STL762:42.313 B-R22:42.2042:49.596 B-Q2:42.313 B-R22:45.019 B-R2+3.305 B-R2102.4 B-R247.490 B-R256.570 B-R258.144 B-R2
56Mazda MiataStephen Hoch >115%STL09, 1012:42.728 D-R12:42.2632:45.323 C-Q22:42.728 D-R12:43.942 C-R2+1.018 C-R2103.7 D-R148.266 B-Q55.932 C-R258.065 C-R2
57Mazda MiataDan Harding >115%STL184, 842:43.798 B-R22:42.8032:44.645 D-Q22:43.798 B-R22:46.112 C-R2+0.941 C-R2103.3 B-R247.875 B-R256.537 D-P58.391 D-Q2
58Mazda Miata (1996)Joseph Miklos >115%STL972:44.041 A-R12:43.5292:52.447 B-Q2:44.041 A-R12:45.671 A-R1+3.304 A-R1103.8 A-R247.458 A-R157.445 A-R158.626 A-R1
59Mazda MiataM. Rose Hawley >115%STL912:47.128 D-R12:46.6122:49.406 D-Q22:47.128 D-R12:49.293 D-R1+3.696 D-R1102.5 D-R149.564 D-R157.947 D-R159.101 D-R1
60No No_Name >115%STL152:48.158 B-Q2:48.1582:48.158 B-Q99.0 B-Q49.574 B-Q58.548 B-Q1:00.036 B-Q
61Mazda MiataMargaret Rose Hawley >115%STL912:49.991 D-P2:49.554103.5 D-P50.640 D-P59.162 D-P59.752 D-P
62Mazda MiataCharles Banks >115%STL742:54.190 D-R22:53.2842:59.990 D-Q22:54.190 D-R22:56.934 D-R2+5.376 D-R299.7 D-R151.407 D-R259.696 D-R21:02.181 D-R2

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.

By car

CarClassDriversLapQualRaceTrapS1S2S3
Mazda MiataSTL352:08.064Christopher Childs2:30.043Amy Mills2:28.961Amy Mills128.9Christopher Childs38.042Christopher Childs44.037Christopher Childs45.843Christopher Childs
Mazda MX-5STL152:24.667Danny Steyn2:25.235Danny Steyn2:24.667Danny Steyn120.2Ryan Harrison42.561Danny Steyn49.843Danny Steyn51.456Danny Steyn
Honda CRXSTL22:24.771Jose Osiris Pena2:25.054Joe Moser2:24.771Jose Osiris Pena120.5Jose Osiris Pena42.332Jose Osiris Pena49.745Joe Moser51.088Jose Osiris Pena
Acura IntegraSTL42:27.045Mike Taylor2:29.336Jon Sewell2:27.045Mike Taylor118.8Jon Sewell42.472Mike Taylor51.374Jon Sewell52.551Mike Taylor
Toyota 86STL12:28.654Olivier Jean Francois2:28.654Olivier Jean Francois2:30.119Olivier Jean Francois114.7Olivier Jean Francois44.138Olivier Jean Francois51.416Olivier Jean Francois53.055Olivier Jean Francois
Honda CivicSTL12:29.447Mike Taylor2:30.474Mike Taylor2:29.447Mike Taylor116.1Mike Taylor44.119Mike Taylor51.866Mike Taylor53.091Mike Taylor
Toyota CelicaSTL12:33.698Javier Vento2:34.571Javier Vento2:33.698Javier Vento112.5Javier Vento45.168Javier Vento52.796Javier Vento55.134Javier Vento
Honda S2000STL12:36.529Darrel Stein2:36.529Darrel Stein113.0Darrel Stein46.529Darrel Stein53.729Darrel Stein55.745Darrel Stein
Mazda RX-7STL12:40.813Mark Keefer2:42.343Mark Keefer2:40.813Mark Keefer109.1Mark Keefer46.240Mark Keefer56.199Mark Keefer57.271Mark Keefer
(unknown)STL12:48.158No No_Name2:48.158No No_Name99.0No No_Name49.574No No_Name58.548No No_Name1:00.036No No_Name

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway → Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway 2022-01-14 to 2023-01-13

STL Single TB Weight Modifiers

#31449 from John Weisberg · Rule change · TB 22-03 (2022-03 Fastrack)

Summary

fasterSTU normally aspirated engines: minimum weights reduced up to 310 lbs; single throttle body weight reduction removed.

As printed in Fastrack

Effective 5.1.2022 In STU, GCR Section 9.1.4.H.1., change as follows:
"1. Minimum weights for cars with normally aspirated piston engines will be determined by 1.1 lbs/cc displacement for the
installed engine (see following table) the following table. Displacement is the stock displacement for the installed engine. For the
purpose of weight assignment, engine displacement will be rounded to the nearest 50cc (e.g., 2176cc = 2200cc and 2175cc =
2150cc)."
Factory Engine Displacement (cc) Minimum Weight (lbs)

A specification table follows in the original; it is not shown here.

STL Improved Touring Tires

#32063 from Greg Amy · Rule change · TB 22-03 (2022-03 Fastrack)

Summary

tyres & wheelsSTL and STU Improved Touring vehicles must conform to 9.1.4 Tires & Wheels requirements.

As printed in Fastrack

In STU Table B, Improved Touring Vehicles (1985-), change Notes as follows:
"Must completely conform to ITCS requirements. Tires must conform to 9.1.4, Tires & Wheels"
In STL Table B, ITA-spec and ITS-spec RX7, change Notes as follows:
"Must completely conform to ITCS requirements. Tires must conform to 9.1.4, Tires & Wheels"
In STL Table B, ITS, ITA, ITB, or ITC vehicles (1985- ), change Notes as follows:
"Must completely conform to ITCS requirements. Tires must conform to 9.1.4, Tires & Wheels"

STL Spec MX5 in STL

#33473 from Tom Bogar · Rule change · TB 23-01 (2023-01 Fastrack)

Summary

wordingSTL Spec MX5 clutch, wheels, and tyres specified: ACT 0000-02-5004-G6, 17x8 wheels, Toyo RR and RA1 235-40-17.

As printed in Fastrack

In STL, Table B: Alternate Vehicle and Engine Allowances, Mazda Spec MX5 Challenge, change notes as follows:
"ACT clutch 0000-02-5004-G6, wheels 17x8 #0000-04-5706-GM, # 0000-04- 5706-SL, and Toyo RR 235-40-17 dry, Toyo RA1 235-
40-17 wet. Alternative tires on 17x7 wheels per STL rules. No other Super Touring modifications or allowances permitted except
as noted in this spec line."

Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway → Central Florida 2024 2023-01-13 to 2024-01-12

STL Clarify STL table B - IT spec notes on Tires

#34187 from Austin Hilliard · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

wordingSTL ITA/ITS RX7 and 1985+ ITA/ITS/ITB/ITC vehicles clarified to conform to section 9.1.4.2 tire specifications.

As printed in Fastrack

In STL Spec Lines, Table B: Alternate Vehicle and Engine Allowances, change Notes as follows:
ITA-spec and ITS-spec RX7: "Must completely conform to ITCS specifications. Tires must conform to 9.1.4, Tires & Wheels. Tires
must also conform to 9.1.4.2.Tires."
ITS, ITA, ITB, or ITC vehicles (1985- ): "Must completely conform to ITCS specifications. Tires must conform to 9.1.4, Tires &
Wheels. Tires must also conform to 9.1.4.2.Tires."

STL Alternate Carburetor Request for 79-85 RX7 12a

#35181 from Dan Sheppard · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

unclearSTL Mazda RX-7 12A (79-85) now allows auto-type 2 bbl with 42mm choke(s) on dual-y manifold as alternate to stock Nikki 4 bbl.

As printed in Fastrack

In STL Table B: Alternate Vehicle and Engine Allowances, Mazda RX-7 12A (79-85), change Notes as follows:
"Street Porting of the engine only. Bridge porting, peripheral porting, and eyelash porting are prohibited. Contact SCCA National
Office for details of Street porting. Stock Nikki 4 bbl carburetor on a stock manifold only. or auto-type 2 bbl w/42mm choke(s) on
a “dual-y” manifold. Allow the standard removal of emissions related components, and allow air and fuel jets to be corrected.
Modification of the water jacket in the area of the spark plug for cooling purposes is permitted."

Central Florida 2024 → Central Florida 2025 2024-01-12 to 2025-01-10

STL ST Electric-Assisted Steering Systems

#35066 from Jose Osiris Pena · Rule change · TB 24-02 (2024-01 Fastrack)

Summary

wordingSTL and STU power steering rules clarified to permit electric-assisted and hydraulic-assisted steering systems.

As printed in Fastrack

In GCR, Section 9.1.4.M.16., change as follows:
"Power steering may be modified in any of the following ways:
a. disconnected , pump, belt, pulley, and hoses may be removed. Hoses may also be looped. Steering rack or box may be
modified internally to work without pump.
b. an OEM manual steering rack for that model may be fitted
c. an electric power steering pump may be fitted
d. an OEM electric-assisted steering system may be used or any column mounted electric steering assist may be used
e. an OEM hydraulic-assisted steering system may be used"

STL BOP Adjustments

#35112 from Super Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)

Summary

fasterSTL Acura/Honda B-series and Mazda MZR restrictors reduced 2mm; minimum weights down 25–75 lbs for 1900–2000cc engines.

As printed in Fastrack

In GCR, 9.1.4.H.1., change as follows:
"Minimum weights for cars with normally aspirated piston engines will be determined by 1.35 lbs/cc displacement for
the installed engine (see the following table). Displacement is the factory displacement for the installed engine. For the
purpose of weight assignment, engine displacement will be rounded to the nearest 50cc (e.g., 2176cc = 2200cc and
2175cc = 2150cc)."
In GCR, 9.1.4.H.1., change Minimum Weight on Chart as follows:
Factory Engine Displacement 1900: "Effective 3-1-24: 2565 2540"
Factory Engine Displacement 1950: "Effective 3-1-24: 2633 2583"

Show 11 more lines

Factory Engine Displacement 2000: "Effective 3-1-24: 2700 2625"
In GCR, 9.1.4.H.3., change as follows:
"Front wheel drive cars with a strut type front suspension may reduce their minimum weight by 2.5 percent. Effective 3-
1-24: Front wheel drive cars with 95" or less wheelbase must add 1.25% to their minimum weight."
In STL Spec Lines, change Notes as follows:
Acura/Honda B16: "Effective 3-1-24: 53 51mm"
Acura/Honda B17: "Effective 3-1-24: 53 51mm"
Acura/Honda B18C1: "Effective 3-1-24: 53 51mm"
Acura/Honda B18C (JDM Type R), B18C5 (USDM Type R), B18C6 (UK and Euro Type R), B18C7 (Australia Type R):
"Effective 3-1-24:52 50mm"
Mazda MZR: "Effective 3-1-24: 52 50mm"

STL Mazda 12A

#35320 from Super Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

Summary

slowerSTL Mazda 12A must keep 5th and 6th intake port actuators and valves, no longer allowed removal or disabling.

As printed in Fastrack

In STL Spec Lines, Table A, Mazda 12A, change Notes as follows:
"The 5th and 6th intake port actuators and valves may be removed or disabled."

STL Request to Remove Miata Hubs from General category

#37138 from Christopher Childs · Rule change · TB 24-12 (2024-12 Fastrack)

Summary

wordingSTL/STU: 90-05 Mazda Miata alternate front wheel hubs moved from General to specific part approval.

As printed in Fastrack

In GCR, Section 9.1.4.M.18., change as follows:
"18. Allow alternate front wheel front hubs, Mazda Motorsports Development Part #0000-04-5HUB-S1, for the 90-05 Mazda
Miata: Mazda Motorsports Development Part #0000-04-5HUB-S1."

What the rules allowed changed as listed; this does not say what any particular car ran.