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BoP Lab / World Wide Technology Raceway

STL vs FC vs B-Spec vs SM pace at World Wide Technology Raceway

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
ASvsB-Spec×EPF5FAvsFC×FE2FFFPFVFXGT1GT2GT3GTLHPP2vsSM×SRF3STL×STUT1T2T3T4
Reference class · the others' laps as a share of this one's at the same event, so years compare despite weather; + a class above to measure against it

Quickest here: STL 1:07.622 Joe Moser, ADS 2020 race · FC 58.276 Bill Johnson, ADS 2020 qualifying · B-Spec 1:14.914 Frank Schwartz, ADS 2020 qualifying · SM 1:11.508 Kyle Greenhill, ADS 2020 qualifying

EventSTLFCB-SpecSM
Qual bestRace bestTrapQual bestRace bestTrapvs STL% of STLQual bestRace bestTrapvs STL% of STLQual bestRace bestTrapvs STL% of STL
ADS 2020 ADS202020-05-291:07.837Joe Moser · fastest of 5 · top 5 within 4.0s1:07.622Joe Moser · fastest of 5 · top 5 within 4.1s127.0Joe Moser58.276Bill Johnson · only car59.061Bill Johnson · only car139.8Bill Johnson-8.561squal -9.561s87.3%qual 85.9%1:14.914Frank Schwartz · fastest of 6 · top 5 within 1.0s1:15.062Chris Taylor · fastest of 6 · top 5 within 0.8s112.4Frank Schwartz+7.440squal +7.077s111.0%qual 110.4%1:11.508Kyle Greenhill · fastest of 13 · top 5 within 0.7s1:11.767Jim Drago · fastest of 12 · top 5 within 1.2s116.3Cooper Lilly+4.145squal +3.671s106.1%qual 105.4%
47 earlier rule changes on record, in force before ADS 2020 (from 2019)11 cars added · 8 induction · 2 suspension & brakes · 2 weight · 1 engine · 21 wording · 2 other · B-Spec Chevrolet Sonic 5dr Hatch and 4dr Sedan allow Setrab transmission cooler for automatic-equipped cars. · B-Spec: multiple models allow specific suspension kits and damper assemblies. · B-Spec sunroof retention wording removed, simplifying rules. · B-Spec Ford Fiesta 5dr gets 36mm restrictor, 4dr gets 34mm, Honda Fit 09-12 loses 25 lbs to 2525, Fit 15-20 restrictor reduced 32mm to 30mm, Mini Cooper 07-10 gets 40mm restrictor. · STL Honda B18 restrictor reduced from 54mm to 53mm flat plate; B18C1 added with 54mm restrictor. · STU GM Ecotech LNF now allowed with turbo removed or with LE5 head and intake manifold, meeting STL specs. · STL Mazda MZR restrictor reduced from 54 mm to 53 mm. · STL Mazda MZR restrictor reduced from 55 mm to 53 mm. · B-Spec Sonic extended to 2019, Fiat 500 limited to 2015, Fiesta models extended to 2019, Fit expanded to 2015-2019. · B-Spec Mini Cooper R50, R55, R58, R60, R61 models newly classified at 2545–2625 lbs with 40mm restrictor for 12+ models. · B-Spec fog lamps must now be removed and holes completely covered, reversing prior allowance. · B-Spec Chevrolet Sonic 4dr Sedan (12-19) added at 2650 lbs with 32mm flat plate restrictor. · STL Mazda Spec MX5 Challenge adds approved wheel part numbers 0000-04-5706-GM, 0000-04-5706-SL. · B-Spec now permits automatic and CVT transmissions on all legal cars meeting spec line. · B-Spec automatic transmissions may use auxiliary coolers on case-by-case basis with part number approval. · Toyota Yaris Sedan 2007- added to B-Spec at 2400 lbs with 1491cc engine. · B-Spec adds 2011-2016 Ford Fiesta 4dr Sedan, 1596cc, 2495 lbs minimum weight. · B-Spec Kia Rio 5-door/LX years expanded to 2012-2019. · B-Spec Mazda2 (10-14) allows specific suspension, intake, exhaust, and bushing parts; removes air duct Mz26-117-33100. · B-Spec Mini Cooper production years corrected to 2011-13. · FC Zetec connecting rods now allow Eagle #CRS5483F3D in addition to original Ford. · FC adds Mahle #930169439 piston as alternate option to existing Ford, Sealed Power, and United Engine choices. · B-Spec Mazda 2, Fiat 500, 2007-10 Mini Cooper permitted to replace primary cat/exhaust manifold with approved header. · B-Spec removes year-specific eligibility and twelve-year competition window wording. · B-Spec Honda Fit model year expanded to include 2013, now covers 2009–2013. · Mazda Spec MX-5 Challenge classified in STL with 2000cc displacement and 2500 lbs minimum weight. · B-Spec 2007-10 Mini Cooper gains OBX header part #10-2101-2S as permitted E&O. · STU alternate intake manifolds now allowed case-by-case instead of prohibited. · STL Acura/Honda B18 except C engine restrictor increases from 53mm to 54mm flat plate. · FC Wiseco piston and Crower connecting rod part numbers updated; minimum weight 976 grams. · STL and STU ride height measurement clarified: without driver, at rocker panel lowest point, excluding pinch weld. · B-Spec added to GCR 9.3.26 fuel cell exception list; stock fuel tank permitted. · SM fuel pump and filter must be Mazda or OEM Equivalent part. · 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. · SM 1999-2000 model year cars may use replacement Mazda ECU and injector harnesses, unmodified. · SM electrical rules reorganized and clarified; alternator external regulation now prohibited except via OEM ECU/kill switch. · SM removes tire tread protrusion beyond fender opening requirement from GCR 9.1.7.C.5. · Canadian Nissan Micra Cup Car classified in B-Spec at 2450 lbs with 1598cc engine, Micra Cup suspension kit allowed. · Toyota Yaris (12-18) newly classified in B-Spec with 1491cc engine, 2400 lbs minimum weight, specified suspension and intake allowed. · B-Spec exhaust system wording clarified: OEM or exact replacement catalysts permitted, stock oxygen sensors required, primary converter unmodified. · FC Wiseco piston and Crower connecting rod assembly minimum weight increases from 555 to 976 grams. · 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.showhide
  • B-Spec Transmission cooler for automatic equipped cars #28171otherotherB-Spec Chevrolet Sonic 5dr Hatch and 4dr Sedan allow Setrab transmission cooler for automatic-equipped cars.
  • B-Spec Spring Update for all models #28384suspension & brakessuspension & brakesB-Spec: multiple models allow specific suspension kits and damper assemblies.
  • B-Spec Request to Cleanup Sunroof Wording #28401wordingwordingB-Spec sunroof retention wording removed, simplifying rules.
  • B-Spec B-Spec Balance of Performance based on 2018 and 2019 seasons #28394induction -25 lbsslowerB-Spec Ford Fiesta 5dr gets 36mm restrictor, 4dr gets 34mm, Honda Fit 09-12 loses 25 lbs to 2525, Fit 15-20 restrictor reduced 32mm to 30mm, Mini Cooper 07-10 gets 40mm restrictor.
  • STL STL Honda B18 restrictor changes #28794inductionfasterSTL Honda B18 restrictor reduced from 54mm to 53mm flat plate; B18C1 added with 54mm restrictor.
  • STL Change GM LNF 2.0 Allowance to LSJ Engine for Viable STL 2.0 #27884engineslowerSTU GM Ecotech LNF now allowed with turbo removed or with LE5 head and intake manifold, meeting STL specs.
  • STL Acura/Honda B18C engine chart. Reduce the current 54 mm flat plat #28663inductionslowerSTL Mazda MZR restrictor reduced from 54 mm to 53 mm.
  • STL Mazda MZR engine chart. Reduce the current 55 mm flat plate to 53 #28664inductionslowerSTL Mazda MZR restrictor reduced from 55 mm to 53 mm.
  • B-Spec Request for Model Years Updating #27850wordingwordingB-Spec Sonic extended to 2019, Fiat 500 limited to 2015, Fiesta models extended to 2019, Fit expanded to 2015-2019.
  • B-Spec Request to classify Min Cooper models #27861cars addedcars addedB-Spec Mini Cooper R50, R55, R58, R60, R61 models newly classified at 2545–2625 lbs with 40mm restrictor for 12+ models.
  • B-Spec remove fog lights #27947wordingwordingB-Spec fog lamps must now be removed and holes completely covered, reversing prior allowance.
  • B-Spec add sonic sedan #27948cars addedcars addedB-Spec Chevrolet Sonic 4dr Sedan (12-19) added at 2650 lbs with 32mm flat plate restrictor.
  • STL Request to add wheel part numbers #28342wordingwordingSTL Mazda Spec MX5 Challenge adds approved wheel part numbers 0000-04-5706-GM, 0000-04-5706-SL.
  • B-Spec Request for Automatic Transmission Inclusion #27686wordingwordingB-Spec now permits automatic and CVT transmissions on all legal cars meeting spec line.
  • B-Spec Request to Add Transmission Coolers to Automatics #27687otherotherB-Spec automatic transmissions may use auxiliary coolers on case-by-case basis with part number approval.
  • B-Spec Add Yaris Sedan #26797cars addedcars addedToyota Yaris Sedan 2007- added to B-Spec at 2400 lbs with 1491cc engine.
  • B-Spec Add 2011-2016 Fiesta Sedan #26798cars addedcars addedB-Spec adds 2011-2016 Ford Fiesta 4dr Sedan, 1596cc, 2495 lbs minimum weight.
  • B-Spec add 2015-2019 Kia Rio #26799cars addedcars addedB-Spec Kia Rio 5-door/LX years expanded to 2012-2019.
  • B-Spec Error and Omissions #27858suspension & brakessuspension & brakesB-Spec Mazda2 (10-14) allows specific suspension, intake, exhaust, and bushing parts; removes air duct Mz26-117-33100.
  • B-Spec Request for Correction of Production Years for Mini Cooper #27226wordingwordingB-Spec Mini Cooper production years corrected to 2011-13.
  • FC Request for Better Zetec Connecting Rods #27710wordingwordingFC Zetec connecting rods now allow Eagle #CRS5483F3D in addition to original Ford.
  • FC Add Alternate Piston #27795wordingwordingFC adds Mahle #930169439 piston as alternate option to existing Ford, Sealed Power, and United Engine choices.
  • B-Spec Request for Corrections to 9.1.10 E Item #27 D and E #27224inductionfasterB-Spec Mazda 2, Fiat 500, 2007-10 Mini Cooper permitted to replace primary cat/exhaust manifold with approved header.
  • B-Spec Remove wording in the B-spec rules #27388wordingwordingB-Spec removes year-specific eligibility and twelve-year competition window wording.
  • B-Spec Request to add 2013 Honda Fit model year #27491cars addedcars addedB-Spec Honda Fit model year expanded to include 2013, now covers 2009–2013.
  • STL Request to Classify Spec MX-5 Challenge in STL #27399cars addedcars addedMazda Spec MX-5 Challenge classified in STL with 2000cc displacement and 2500 lbs minimum weight.
  • B-Spec Request to allow OBX Header for 2007-10 Mini Cooper #26977wordingwordingB-Spec 2007-10 Mini Cooper gains OBX header part #10-2101-2S as permitted E&O.
  • STL Request clarification for manifold and throttle in STU #27004inductionfasterSTU alternate intake manifolds now allowed case-by-case instead of prohibited.
  • STL Request Restrictor Plate correction #26779inductionfasterSTL Acura/Honda B18 except C engine restrictor increases from 53mm to 54mm flat plate.
  • FC E&O Wiseco piston and Crower connecting rod #26659wordingwordingFC Wiseco piston and Crower connecting rod part numbers updated; minimum weight 976 grams.
  • STL Request Ride Height Clarification #26597wordingwordingSTL and STU ride height measurement clarified: without driver, at rocker panel lowest point, excluding pinch weld.
  • B-Spec Request to add B-Spec to GCR 9.3.26 fuel cell #26132wordingwordingB-Spec added to GCR 9.3.26 fuel cell exception list; stock fuel tank permitted.
  • SM Request to allow aftermarket fuel filters. #26370wordingwordingSM fuel pump and filter must be Mazda or OEM Equivalent part.
  • STL Request to Allow VW 1.8L Engine #25614cars addedcars addedSTL adds VW 1.8L R4 20VT 1781cc, 1 minimum weight, turbo removed permitted.
  • STL Request to reduce weight of RX8 with Renesis rotary #25781weight -100 lbsfasterSTL Mazda Renesis minimum weight reduced from 2800 to 2700 lbs.
  • STL Request for Open Brake Pads On Mazda MX-5 Cup NC #25821wordingwordingSTL Mazda MX-5 Cup brake pad compound changed to open.
  • 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.
  • STL Port Matching #26415wordingfasterSTL Mazda 12 and 13B now permit port matching; previous ban removed.
  • SM Request 99-00 replacement Wire harnesses #25602wordingwordingSM 1999-2000 model year cars may use replacement Mazda ECU and injector harnesses, unmodified.
  • SM Organize and Clarify 9.1.7.C.1.o. #25913wordingwordingSM electrical rules reorganized and clarified; alternator external regulation now prohibited except via OEM ECU/kill switch.
  • SM Strike Tire Tread Language #26123wordingwordingSM removes tire tread protrusion beyond fender opening requirement from GCR 9.1.7.C.5.
  • B-Spec Request to classify Canadian Nissan Micra Cup cars #25216cars addedcars addedCanadian Nissan Micra Cup Car classified in B-Spec at 2450 lbs with 1598cc engine, Micra Cup suspension kit allowed.
  • B-Spec Request updated Toyota Yaris Spec Lines #25483cars addedcars addedToyota Yaris (12-18) newly classified in B-Spec with 1491cc engine, 2400 lbs minimum weight, specified suspension and intake allowed.
  • B-Spec Update wording of exhaust #26022wordingwordingB-Spec exhaust system wording clarified: OEM or exact replacement catalysts permitted, stock oxygen sensors required, primary converter unmodified.
  • FC Correct Wiseco piston and connecting rod #25809weightslowerFC Wiseco piston and Crower connecting rod assembly minimum weight increases from 555 to 976 grams.
  • 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.
  • STL Request E&O for Mazda Miata Spec Line #25955wordingunclearSTL Mazda Miata removes maximum displacement limit and adjusts minimum weight.

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.