BoP Lab / Laguna Seca

STL vs FM vs T4 vs EP pace at Laguna Seca

Quickest here: STL 1:42.330 Tim Auger, Hoosier SCCA Super Tour (San Francisco Region) race · FM 1:31.060 Bill Weaver, Hoosier SCCA Super Tour (San Francisco Region) qualifying · T4 1:45.119 Izzy Sanchez, Hoosier SCCA Super Tour (San Francisco Region) qualifying · EP 1:38.804 Glen McCready, Hoosier SCCA Super Tour (San Francisco Region) race

	Event	STL			FM					T4					EP
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs STL	% of STL	Qual best	Race best	Trap	vs STL	% of STL	Qual best	Race best	Trap	vs STL	% of STL
	Hoosier SCCA Super Tour (San Francisco Region) ST19JUL262019-07-26	1:42.773Tim Auger · fastest of 7 · top 5 within 4.9s	1:42.330Tim Auger · fastest of 6 · top 5 within 4.5s	95.7Thomas Lepper	1:31.060Bill Weaver · fastest of 7 · top 5 within 3.0s	1:32.101Bill Weaver · fastest of 7 · top 5 within 1.0s	109.0Randy Sturgeon	-10.229squal -11.713s	90.0%qual 88.6%	1:45.119Izzy Sanchez · fastest of 3 · top 3 within 6.6s	1:45.643Izzy Sanchez · fastest of 3 · top 3 within 3.3s	92.6Lance Stewart	+3.313squal +2.346s	103.2%qual 102.3%	1:39.764Glen McCready · fastest of 5 · top 5 within 9.4s	1:38.804Glen McCready · fastest of 6 · top 5 within 7.7s	102.3Aaron Downey	-3.526squal -3.009s	96.6%qual 97.1%
27 earlier rule changes on record, in force before Hoosier SCCA Super Tour (San Francisco Region) (from 2019)4 cars added · 4 induction · 3 suspension & brakes · 2 weight · 1 engine · 13 wording · STU alternate intake manifolds now allowed case-by-case instead of prohibited. · T4 Toyota MR-2 Spyder 16V DOHC years corrected from 01-05 to 00-07. · STL Acura/Honda B18 except C engine restrictor increases from 53mm to 54mm flat plate. · T4 Mazda Protégé ES 2000 now allows piggyback ECU tuning device; OBD2 requirement waived. · T4 Mazda MX5 Club Model 06-15 allows suspension package with 100 lbs weight increase including helper springs. · EP Mazda RX-8 firewall modification allowed for 13B engine fitment in stock location. · STL and STU ride height measurement clarified: without driver, at rocker panel lowest point, excluding pinch weld. · EP, FP, HP clarified: tapered holes in ball joints now allowed for bolt conversion; wheel bearings and hubs unrestricted at any wheel. · EP open cars may now use aftermarket hardtops if they retain OEM appearance; specific model hardtop allowances removed. · T4 BMW 323 (98-00) newly classified at 3450 lbs with 50mm flat plate restrictor and M52TUB25 engine required. · EP Mazda RX-7 12A and 13B (79-85) lose up to 80 lbs; 13B (86-91) loses up to 79 lbs. · STL adds VW 1.8L R4 20VT 1781cc, 1 minimum weight, turbo removed permitted. · STL Mazda Renesis minimum weight reduced from 2800 to 2700 lbs. · STL Mazda MX-5 Cup brake pad compound changed to open. · STL adds Acura/Honda B18C1 GSR with 54mm flat plate restrictor and port matching limited to 1 inch. · STL Mazda 12 and 13B now permit port matching; previous ban removed. · T4 Mazda MX-5 Club (06-15) and (2016-), T3 MX-5 Cup and Miata (2016-) hardtop rules clarified; wording changes to permitted parts and specifications. · T2, T3, T4 now allow any thermostat serving only OE intent, previously restricted. · T3 and T4 Mazda MX-5 Miata eligibility capped at 2018 model year, effective 2019-03-01. · T4 Honda Civic Si 2012-2015 permitted sway bars increased to 32mm front and rear. · STL B18C Type R variants get 54mm flat plate restrictor; B17 also gets 54mm restrictor. · STL Mazda Miata removes maximum displacement limit and adjusts minimum weight. · T4 Ford Fiesta ST years corrected to 14-; T4 Fiat 124/Abarth Edition years added 16-18; battery rule clarified. · T4 Fiat 124 Abarth Edition restrictor changes from 29mm flat plate to 30mm TIR. · T1-T3 spec cars receive clarifications on permitted modifications, documentation requirements, and rule conformance; no performance changes. · T2-T4 subframe bushings may now be replaced with non-spherical bushings of any material. · Scion FR-S and Subaru BRZ 13-16 Solo Spec Coupes added to T4, both 1998cc, 2570 lbs, 225/45/17 tires.showhide 2019-07-01 STL Request clarification for manifold and throttle in STU #27004inductionfasterSTU alternate intake manifolds now allowed case-by-case instead of prohibited. 2019-07-01 T4 MR2 Spyder Year Correction #26936wordingwordingT4 Toyota MR-2 Spyder 16V DOHC years corrected from 01-05 to 00-07. 2019-05-31 STL Request Restrictor Plate correction #26779inductionfasterSTL Acura/Honda B18 except C engine restrictor increases from 53mm to 54mm flat plate. 2019-05-31 T4 Request to allow piggy back ECU on 2000 Mazda Protégé #26085enginefasterT4 Mazda Protégé ES 2000 now allows piggyback ECU tuning device; OBD2 requirement waived. 2019-05-31 T4 Request helper spring as optional #26678suspension & brakesslowerT4 Mazda MX5 Club Model 06-15 allows suspension package with 100 lbs weight increase including helper springs. 2019-05-01 EP Allow Firewall Modification for Fitment of 13B into RX8 #26726wordingwordingEP Mazda RX-8 firewall modification allowed for 13B engine fitment in stock location. 2019-05-01 STL Request Ride Height Clarification #26597wordingwordingSTL and STU ride height measurement clarified: without driver, at rocker panel lowest point, excluding pinch weld. 2019-04-01 EP Rollcenter Correction Clarification #25873suspension & brakesfasterEP, FP, HP clarified: tapered holes in ball joints now allowed for bolt conversion; wheel bearings and hubs unrestricted at any wheel. 2019-04-01 EP Hardtops #26476wordingwordingEP open cars may now use aftermarket hardtops if they retain OEM appearance; specific model hardtop allowances removed. 2019-04-01 T4 Request to classify 2000 - 2001 BMW 323 #25096cars addedcars addedT4 BMW 323 (98-00) newly classified at 3450 lbs with 50mm flat plate restrictor and M52TUB25 engine required. 2019-03-01 EP Request for Competition Adjustment for 2nd Generation RX7 #25935weight -50 lbsfasterEP Mazda RX-7 12A and 13B (79-85) lose up to 80 lbs; 13B (86-91) loses up to 79 lbs. 2019-03-01 STL Request to Allow VW 1.8L Engine #25614cars addedcars addedSTL adds VW 1.8L R4 20VT 1781cc, 1 minimum weight, turbo removed permitted. 2019-03-01 STL Request to reduce weight of RX8 with Renesis rotary #25781weight -100 lbsfasterSTL Mazda Renesis minimum weight reduced from 2800 to 2700 lbs. 2019-03-01 STL Request for Open Brake Pads On Mazda MX-5 Cup NC #25821wordingwordingSTL Mazda MX-5 Cup brake pad compound changed to open. 2019-03-01 STL Request to clarify B18C1 GSR Honda B motor table #26209cars addedcars addedSTL adds Acura/Honda B18C1 GSR with 54mm flat plate restrictor and port matching limited to 1 inch. 2019-03-01 STL Port Matching #26415wordingfasterSTL Mazda 12 and 13B now permit port matching; previous ban removed. 2019-03-01 T4 Correct Mazda MX-5 Hard Top Notes #26137wordingwordingT4 Mazda MX-5 Club (06-15) and (2016-), T3 MX-5 Cup and Miata (2016-) hardtop rules clarified; wording changes to permitted parts and specifications. 2019-03-01 T4 Consider opening class rules to allow any thermostat #26187wordingwordingT2, T3, T4 now allow any thermostat serving only OE intent, previously restricted. 2019-03-01 T4 Cap 2016 Mazda Miata year at 2018 #26388wordingwordingT3 and T4 Mazda MX-5 Miata eligibility capped at 2018 model year, effective 2019-03-01. 2019-02-01 T4 2012-2015 Honda Civic Si Performance Request #26129suspension & brakesfasterT4 Honda Civic Si 2012-2015 permitted sway bars increased to 32mm front and rear. 2019-01-01 STL Request to equalize FPR Reduction on all B-Series Vtec Engines #24746inductionslowerSTL B18C Type R variants get 54mm flat plate restrictor; B17 also gets 54mm restrictor. 2019-01-01 STL Request E&O for Mazda Miata Spec Line #25955wordingunclearSTL Mazda Miata removes maximum displacement limit and adjusts minimum weight. 2019-01-01 T4 Errors, Omissions, and Updates (Various) #22414wordingwordingT4 Ford Fiesta ST years corrected to 14-; T4 Fiat 124/Abarth Edition years added 16-18; battery rule clarified. 2019-01-01 T4 Request for Adjustments to fiat 124 specline #25371inductionfasterT4 Fiat 124 Abarth Edition restrictor changes from 29mm flat plate to 30mm TIR. 2019-01-01 T4 Add Clarification to Spec Car Classifications Vehicle Spec #25774wordingwordingT1-T3 spec cars receive clarifications on permitted modifications, documentation requirements, and rule conformance; no performance changes. 2019-01-01 T4 Clarify Subframe Bushings Permitted for T2-T4 #25800wordingwordingT2-T4 subframe bushings may now be replaced with non-spherical bushings of any material. 2019-01-01 T4 Consider Solo SSC cross over classification into T4 #25802cars addedcars addedScion FR-S and Subaru BRZ 13-16 Solo Spec Coupes added to T4, both 1998cc, 2570 lbs, 225/45/17 tires.

Best is the class's fastest lap in that event's qualifying or race sessions, with the driver who set it, how many cars set a time that session and how close the top five were; a best from fewer than three cars is greyed. With two or more classes, "vs" is the gap of each class's best to the first class's at the same event. "% of STL" is the class's best as a share of STL's best at the same event (100% is level, less is quicker): weather and track condition move every class together, so this compares across years where the raw times do not. It still breaks when STL's own field changes or one session was wet and another dry. Newest event first. The coloured figure under each value is the change from the previous event that has one (green is quicker, red slower). Whole laps only, so events with different sector layouts still compare. Weather and track condition are not accounted for.