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BoP Lab / Classes / CFC

CFC vs GTX vs FA pace at every track

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Reference · what % is measured against, 11 events
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1:201:301:401:502:0012 rule changes between Runoffs 2018 and Runoffs 201912 ▾25 rule changes between Runoffs 2019 and Runoffs 202025 ▾26 rule changes between Runoffs 2020 and Runoffs 202126 ▾15 rule changes between Runoffs 2021 and Runoffs 202215 ▾17 rule changes between Runoffs 2022 and Runoffs 202417 ▾6 rule changes between Runoffs 2024 and Runoffs 20256 ▾10 rule changes between Runoffs 2025 and Runoffs 202610 ▾FA race best at Runoffs 2015: 1:48.162 (Tyler Hunter)FA race best at Runoffs 2016: 1:19.009 (Ryan Norman)FA race best at Runoffs 2017: 1:31.365 (Keith Grant)FA race best at Runoffs 2018: 1:29.924 (Mirl Swan)FA race best at Runoffs 2019: 1:43.107 (Dario Cangialosi)FA race best at Runoffs 2020: 2:04.746 (Spencer Brockman)FA race best at Runoffs 2021: 1:30.650 (James French)FA race best at Runoffs 2022: 1:48.507 (Alex Mayer)FA race best at Runoffs 2024: 2:01.790 (Dudley Fleck)FA race best at Runoffs 2025: 2:02.654 (Hans Peter)FA race best at Runoffs 2026: 2:03.334 (James French)FA qualifying best at Runoffs 2015: 1:47.758 (Tyler Hunter)FA qualifying best at Runoffs 2016: 1:14.920 (Ryan Norman)FA qualifying best at Runoffs 2017: 1:29.957 (Sedat Yelkin)FA qualifying best at Runoffs 2018: 1:28.176 (Mirl Swan)FA qualifying best at Runoffs 2019: 1:41.545 (Dario Cangialosi)FA qualifying best at Runoffs 2020: 2:04.274 (Spencer Brockman)FA qualifying best at Runoffs 2021: 1:29.701 (James French)FA qualifying best at Runoffs 2022: 1:44.703 (Chip Romer)FA qualifying best at Runoffs 2024: 2:01.560 (Hans Peter)FA qualifying best at Runoffs 2025: 2:00.923 (Hans Peter)FA qualifying best at Runoffs 2026: 2:02.513 (Dudley Fleck)Daytona International Speedway · Runoffs 2015R2015Mid-Ohio Sports Car Course · Runoffs 2016R2016Indianapolis Motor Speedway · Runoffs 2017R2017Sonoma Raceway · Runoffs 2018R2018Virginia International Raceway · Runoffs 2019R2019Road America · Runoffs 2020R2020Indianapolis Motor Speedway · Runoffs 2021R2021Virginia International Raceway · Runoffs 2022R2022Road America · Runoffs 2024R2024Road America · Runoffs 2025R2025Road America · Runoffs 2026R2026
CFCGTXFAsolid race · dashed qualifying · slower is lower
EventCFCGTXFA
Qual best Race best Trap Qual best Race best Trap vs CFC Qual best Race best Trap vs CFC 
Road America Runoffs 20262026-09-282:02.513Dudley Fleck · fastest of 9 · top 5 within 6.9s+1.590s (+1.31%)2:03.334James French · fastest of 10 · top 5 within 1.4s+0.680s (+0.55%)158.6John McAleer+1.5 mph (+1.0%)
10 rule changes (GTX: 3, FA: 7)3 induction · 2 cars added · 2 engine · 1 removed · 1 weight · 1 othershowhide
  • FA Update sealed engine teardown section #40621engine
  • FA Motor Classification #40175weight
  • GTX Ferrari 296 GT3 Classification Request #39873cars added
  • GTX Remove GT3U from GCR as it is now in STU #39862removed
  • FA Pro Mazda Classification and Performance Enhancement Proposal #39411induction
  • FA Alternate Intake Manifold for MZR #38223induction
  • FA Engine Compression Rule Change Request #39302engine
  • FA Change Formula 1000 allowances #39608induction
  • GTX Please Consider Adding a Spec Line to GTX Table 4 for the RCR T70 #39470cars added
  • FA Re-Consider USF Pro 2000 Car for Formula Atlantic Class #38783other
Road America Runoffs 20252025-09-292:00.923Hans Peter · fastest of 12 · top 5 within 2.4s-0.637s (-0.52%)2:02.654Hans Peter · fastest of 11 · top 5 within 3.1s+0.864s (+0.71%)157.0Shane Kennett-3.0 mph (-1.9%)
6 rule changes (GTX: 3, FA: 3)2 cars added · 2 tyres & wheels · 1 aero · 1 engineshowhide
  • FA Ligier JS F3 Tire Choice #38434tyres & wheels
  • GTX Ligier P3 LS Swap #38164engine
  • GTX Request to Classify Porsche GT2 RS Clubsport #37972cars added
  • FA Update Formula Renault 2.0 spec line notes #37853tyres & wheels
  • FA Classify FR European Championship car as spec line car in Table 2 #37658cars added
  • GTX Correct language regarding OEM Areo Devices #37137aero
Road America Runoffs 20242024-10-012:01.560Hans Peter · fastest of 13 · top 5 within 2.0s-2.714s (-2.18%)2:01.790Dudley Fleck · fastest of 12 · top 5 within 3.3s-2.956s (-2.37%)160.0Brandon Schwarz+9.4 mph (+6.3%)
17 rule changes (GTX: 10, FA: 7)4 cars added · 3 engine · 3 induction · 3 weight · 2 tyres & wheels · 1 aero · 1 othershowhide
  • GTX Request for Spec Line 1010 Reconsideration #35009weight +300 lbs
  • GTX Rear Blade Spoiler Clarification #35261aero
  • GTX GT Direct Injection allowance and rules #35437engine
  • GTX GT2/3 remove Direction Injection not allowed in Spec line notes #35439engine
  • GTX KTM X Bow GTX #34956cars added
  • GTX Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules #34453weight
  • GTX Request Ligier LMP3 Classification #34043cars added
  • GTX Ligier JSP4 Request #34173cars added
  • FA Simplify Pro Formula Mazda wheel allowance #34190tyres & wheels
  • FA E&O - Correct Pro Formula Mazda spec line dimensional equivalent #34085tyres & wheels
  • FA Add new spec line for MSR Formula Mazda FMzR to Table 2 #34139other
  • GTX Please classify Fields Cardinal V8 #33784cars added
  • FA BDA Displacement #33431engine
  • FA Reclassify 2010-2017 Formula Renault 2.0 as a spec line car in FA #33395weight
  • FA Change Swift 016 2.3L restrictor size and minimum weight #33472induction -30 lbs
  • GTX GT2 (TA2)/GTA Part Number Update #33315induction
  • FA Pro Formula Mazda Dimension E&O #33160induction
Virginia International Raceway Runoffs 20222022-09-241:44.703Chip Romer · fastest of 7 · top 5 within 4.0s+3.158s (+3.11%)1:48.507Alex Mayer · fastest of 4 · top 4 within 4.2s+5.400s (+5.24%)154.6Austin Hill-1.4 mph (-0.9%)
15 rule changes (GTX: 8, FA: 7)4 cars added · 3 engine · 2 weight · 1 aero · 1 induction · 1 suspension & brakes · 1 tyres & wheels · 2 othershowhide
  • GTX Tail lights on all GT category race cars. #32799suspension & brakes
  • GTX Classify 992 GT3 Cup #32649cars added
  • FA Update FR Americas rulebook requirement #32491engine
  • FA Clarify verification of sealed engine compliance #32522engine
  • FA Clarify Formula Lites and FR Americas sealed engine requirement #32523engine
  • GTX Add Classification to the accepted Model Table #31981weight
  • GTX Request to classify C7 Corvette Grand Sport IN GTX Misc #32254cars added
  • GTX E&O list of eligible prototypes #32511other
  • FA E&O FA Transmission section #32251tyres & wheels
  • FA E&O Swift 016 2.5 liter Aero column #32363aero
  • FA Closing the Gap #31934other
  • GTX McLaren 720s GT3 #31955cars added
  • FA Reorganize Tables 1 and 2 #31985weight
  • GTX Remove restrictions from GTX-FIA GT3 #32039induction
  • GTX Request car classification #31032cars added
Indianapolis Motor Speedway Runoffs 20212021-09-251:29.701James French · fastest of 18 · top 5 within 2.7s-0.256s (-0.28%)1:30.650James French · fastest of 17 · top 5 within 6.1s-0.715s (-0.78%)155.5James French
26 rule changes (GTX: 4, FA: 22)6 engine · 6 weight · 4 cars added · 2 induction · 2 removed · 1 tyres & wheels · 2 wording · 3 othershowhide
  • FA E&O Table 2 engine names #31085engine
  • GTX Request to classify 2020 Porsche 718 GT4 Clubsport MR #30956cars added
  • FA Move Toyota 1800 to Table 2 #30822removed
  • FA E&O Swift 016 wheel width reference #30939tyres & wheels
  • GTX Request to Update GTA Obsolete Part Numbers #30615wording
  • GTX GTX class correction to GT2/ST #30973cars added
  • FA Update FA rules package #30717engine
  • FA Move Mazda MZR/Ford Duratec 2296cc and 2500cc to Table 2 #30718removed
  • FA Clean up Table 2 Mazda MZR 2.0L and Honda Civic K20Z3 spec lines #30719other
  • GTX Request classification of Grullon #30481cars added
  • FA E&O Mazda MZR 2.0 and Honda Civic K20Z3 chassis eligibility #30632other
  • FA Correct engine name in Swift 016 2.3 liter spec line #30447engine
  • FA Correct engine name in Swift 016 2.5 liter spec line #30448engine
  • FA Revise Table 1 Spec Lines and clarify application of Engine Notes #30456engine
  • FA Update Table 1 Weights for Spec Lines C, I, and K #30355weight -25 lbs
  • FA Remove redundant reference in Table 2 spec line #30366weight
  • FA Correct the name of the FR Americas car #30369wording
  • FA Clean up Spec Line D in Table 1 #30372weight
  • FA Table 2 Honda K20Z3 request #30386induction
  • FA E&O FA Intake Restrictors #30273induction
  • FA Clean up Spec Lines A and B in Table 1 #30274weight
  • FA Clean up Spec Line C in Table 1 #30275weight
  • FA Clean up Spec Lines J and L in Table 1 #30276weight
  • FA Move engine specifications to Pro Formula Mazda spec line notes #30278engine
  • FA Update F3 Americas spec line #30280other
  • FA Request to classify Formula Lites Crawford FL15 #29702cars added
Road America Runoffs 20202020-10-022:04.274Spencer Brockman · fastest of 11 · top 5 within 2.7s2:04.746Spencer Brockman · fastest of 10 · top 5 within 2.4s150.6Hans Peter
25 rule changes (GTX: 10, FA: 15)5 cars added · 4 aero · 4 engine · 3 induction · 2 tyres & wheels · 2 weight · 1 removed · 4 othershowhide
  • GTX GT Category Wording #29193induction
  • GTX Request Car classification #28935cars added
  • GTX X-Bow GT4 #29088cars added
  • FA Request to Adjust FB Weight for Stock Engines #29005weight
  • GTX TA2 Gurney flap wicker clarification #28874aero
  • GTX STO Gurney flap wicker clarification #28883aero
  • GTX GT Gurney flap wicker clarification #28909aero
  • FA E&O permitted engine modifications #28831engine
  • FA E&O Transmissions #28832other
  • FA Swift 016 Gurney flap wicker clarification #28884aero
  • GTX Request to Re-classify SP Stock car to GTX #28333cars added
  • FA Remove redundant spec line in Table 1 #28720removed
  • FA E&O general engine rules #28772engine
  • GTX Request to Classify Lotus Evora GTS #27057cars added
  • FA Request higher compression ratio and prior weights for F1000 cars #28162engine
  • FA Remove redundant wheel dimension provisions #28554tyres & wheels
  • FA E&O Formula 3 spec line #28596induction
  • FA FA weight correction/clarification #28430engine
  • GTX Windshield Clips #27323other
  • FA Request to merge FB into FA #25611weight
  • FA Suggestions for FB/F1000 into FA #27319other
  • FA Change Swift 016 - 2.3 liter Mazda Duratec restrictor size #27880induction
  • GTX Request Factory Five Daytona coupe classification #26308cars added
  • FA Move wheel dimensions from Bodywork subsection to #27493tyres & wheels
  • FA Table 2 Mazda MZR 2.0 E&O #27640other
Virginia International Raceway Runoffs 20192019-10-051:41.545Dario Cangialosi · fastest of 8 · top 5 within 2.8s1:43.107Dario Cangialosi · fastest of 8 · top 5 within 1.8s155.9Kent Vaccaro
12 rule changes (GTX: 5, FA: 7)3 engine · 3 weight · 2 cars added · 1 removed · 1 suspension & brakes · 2 othershowhide
  • FA Follow up to Letter #27344 on Honda Powered FA Rules #27363removed
  • FA Swift 014 Mazda MZR 2.0 E&O #27305weight
  • FA Adjust Line N restrictor size and minimum weight #26691weight +30 lbs
  • FA Add data plate requirement #26707other
  • GTX Request GTX Fuel injection for previous GT-1 tube frame cars #26141engine
  • GTX Request to Classify Ligier JS2 R #26535cars added
  • GTX Request Ride Height Clarification #26600suspension & brakes
  • FA Request to add FA engine spec lines #26183engine
  • GTX Replace FIA references with SRO #26427other
  • FA FA MZR 2.0 Engine Specification #25814engine
  • FA FA 016 weight increase #26063weight
  • GTX GTX Homologation table update #26034cars added
Sonoma Raceway Runoffs 20182018-10-101:28.176Mirl Swan · fastest of 7 · top 5 within 4.0s1:29.924Mirl Swan · fastest of 7 · top 5 within 2.6s144.8Antony Opheim
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:29.957Sedat Yelkin · fastest of 12 · top 5 within 2.3s1:31.365Keith Grant · fastest of 12 · top 5 within 1.0s
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:14.920Ryan Norman · fastest of 5 · top 5 within 7.0s1:19.009Ryan Norman · fastest of 5 · top 5 within 4.7s
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-211:47.758Tyler Hunter · fastest of 10 · top 5 within 3.7s1:48.162Tyler Hunter · fastest of 8 · top 5 within 5.3s

By track

TrackEvents 
Road America4
Indianapolis Motor Speedway2
Virginia International Raceway2
Daytona International Speedway1
Mid-Ohio Sports Car Course1
Sonoma Raceway1
About this data
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of the reference class's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.