BoP Lab / Laguna Seca

AS vs P1 vs T4 pace at Laguna Seca

Quickest here: AS 1:40.712 Clark Nunes, Hoosier SCCA Super Tour (San Francisco Region) qualifying · P1 1:21.626 Jim Devenport, Hoosier SCCA Super Tour (San Francisco Region) qualifying · T4 1:45.119 Izzy Sanchez, Hoosier SCCA Super Tour (San Francisco Region) qualifying

	Event	AS			P1					T4
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs AS	% of AS	Qual best	Race best	Trap	vs AS	% of AS
	Hoosier SCCA Super Tour (San Francisco Region) ST19JUL262019-07-26	1:40.712Clark Nunes · fastest of 4 · top 4 within 7.9s	1:40.914Clark Nunes · fastest of 4 · top 4 within 8.0s	103.0Michael Thompson	1:21.626Jim Devenport · fastest of 6 · top 5 within 5.2s	1:21.922Todd Slusher · fastest of 6 · top 5 within 4.1s	121.3John Manfroy	-18.992squal -19.086s	81.2%qual 81.0%	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	+4.729squal +4.407s	104.7%qual 104.4%
28 earlier rule changes on record, in force before Hoosier SCCA Super Tour (San Francisco Region) (from 2019)3 cars added · 2 suspension & brakes · 1 engine · 1 induction · 1 removed · 1 weight · 19 wording · P1 allows mechanical and solenoid shifters, prohibits electronic controls and pre-selected changes. · P1 bodywork minimum height provision moved to aerodynamic section; 115cm height limit for aero parts added. · P1 clarifies fender louver and brake duct rules, consolidating duplicative provisions in GCR 9.1.8.C. · T4 Toyota MR-2 Spyder 16V DOHC years corrected from 01-05 to 00-07. · AS Ford Mustang (79-93) 313 CID and under loses 100 lbs to 3150; over 313 CID loses 100 lbs to 3450. · P1 anti-intrusion panels now allowed anywhere on chassis sides, previously restricted. · P1 bodywork wording corrected: 'a passenger' becomes 'passenger' in three GCR sections. · 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. · P1 Engine Table reference cleaned up; no performance change. · P1 Mazda Renesis Rotary removed from Engine Table specification line. · P1 Staudacher and Honda K20A-FD2 engine table language cleaned up; no performance changes. · T4 BMW 323 (98-00) newly classified at 3450 lbs with 50mm flat plate restrictor and M52TUB25 engine required. · P1 closed cockpit single-seat cars moved from subsection J.5 to subsection B.4; prohibition unchanged. · 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. · AS Spec Mustang (SMG) newly classified with 107.1 wheelbase, 3.73 gears, 355mm front brakes, 300mm rear. · P1 engine table reference corrected from 'above' to 'below'; ECU throttle wording clarified for dual sensors and fail-safes. · T4 Honda Civic Si 2012-2015 permitted sway bars increased to 32mm front and rear. · P1 removes redundant TIR inlet restrictor provisions; SIR and flat plate restrictors remain required. · P1 Honda K20A-FD2 CN-spec clarifies allowed parts to OEM list only, no machining. · P1 engine table wording corrected; head designs removed from listed specifications. · 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 P1 E&O Transmissions #27005wordingwordingP1 allows mechanical and solenoid shifters, prohibits electronic controls and pre-selected changes. 2019-07-01 P1 Move minimum height provision to #27031wordingwordingP1 bodywork minimum height provision moved to aerodynamic section; 115cm height limit for aero parts added. 2019-07-01 P1 Remove duplicative fender louver provision #27033wordingwordingP1 clarifies fender louver and brake duct rules, consolidating duplicative provisions in GCR 9.1.8.C. 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 AS Request to Revert to 2017 Weights #25885weightfasterAS Ford Mustang (79-93) 313 CID and under loses 100 lbs to 3150; over 313 CID loses 100 lbs to 3450. 2019-05-31 P1 Missing word E&O #26919wordingwordingP1 anti-intrusion panels now allowed anywhere on chassis sides, previously restricted. 2019-05-31 P1 E&O correction to GCR 9.1.8.C.C. #26927wordingwordingP1 bodywork wording corrected: 'a passenger' becomes 'passenger' in three GCR sections. 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 P1 Clean up reference to engine table #26648wordingwordingP1 Engine Table reference cleaned up; no performance change. 2019-05-01 P1 Remove redundant spec line #26692removedremovedP1 Mazda Renesis Rotary removed from Engine Table specification line. 2019-04-01 P1 Clean Up Engine Table Language #26590wordingwordingP1 Staudacher and Honda K20A-FD2 engine table language cleaned up; no performance changes. 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 P1 Move single-seat closed cockpit provision to #26376wordingwordingP1 closed cockpit single-seat cars moved from subsection J.5 to subsection B.4; prohibition unchanged. 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 AS SMG Mustang eligibility in American sedan #26224cars addedcars addedAS Spec Mustang (SMG) newly classified with 107.1 wheelbase, 3.73 gears, 355mm front brakes, 300mm rear. 2019-02-01 P1 Correct errors in GCR section 9.1.8.C.J #26144wordingwordingP1 engine table reference corrected from 'above' to 'below'; ECU throttle wording clarified for dual sensors and fail-safes. 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 P1 Remove redundant inlet restrictor provisions #25877wordingwordingP1 removes redundant TIR inlet restrictor provisions; SIR and flat plate restrictors remain required. 2019-01-01 P1 Clarify Honda K20A-FD2 parts requirement #25949wordingwordingP1 Honda K20A-FD2 CN-spec clarifies allowed parts to OEM list only, no machining. 2019-01-01 P1 Correct GCR section 9.1.8.C.J errors #25966wordingwordingP1 engine table wording corrected; head designs removed from listed specifications. 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 AS" is the class's best as a share of AS'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 AS'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.