BoP Lab / Michelin Raceway Road Atlanta

ITB vs FB vs FX pace at Michelin Raceway Road Atlanta

Quickest here: FX 1:25.399 Trent Walko, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta race

ITBFBFXsolid race · dashed qualifying · slower is lower

	Event	ITB			FB				FX
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs ITB	Qual best	Race best	Trap	vs ITB
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST24MAR082024-03-08								1:34.337Brad Yake · only car+5.991s (+6.78%)	1:36.351Brad Yake · only car+10.952s (+12.82%)	117.3Brad Yake-19.8 mph (-14.4%)
11 rule changes (ITB: 1, FX: 10)3 cars added · 2 engine · 1 induction · 1 weight · 4 wording · FX Formula 4 now complies with Table 1 notes only; removed reference to FIA 2015 technical regulations and FIA/SCCA safety requirements. · Honda Fit MT and CVT 2015-2019 added to ITB at 2525 lbs, may run B-Spec or IT spec. · Unable to summarize: FX Formula Mazda spec changes reference attached document not provided. · USF2000 Van Diemen with Mazda MZR LF-DE 2.0L added as spec line car in FC; removed from FX. · FX: Wording clarified to remove references to FB and FM in GCR section 1.4.2.D. · Formula Renault 2.0 (10-17) reclassified from FX to FA; weight reduced to 1280 lbs, restrictor removed. · Pro Formula F2000 tube frame reduced to 4 forward gears, sequential carries 25 lb. weight penalty. · FX Formula Mazda minimum weight exception set to 1270 lb. · FX Formula Mazda engine spec changed to six-port 13B only; weight now per notes instead of 1350/1400. · Formula Renault 2.0 (10-17) now requires 45mm Flat Plate Intake Restrictor; fairings prohibited before or after. · USF2000 Tube Frame may now use Performance Electronics PE3-8400 ECU as alternative to Pectel T2.showhide 2024-03-01 FX Clarify Formula 4 Rules in FX #35700wordingunclearFX Formula 4 now complies with Table 1 notes only; removed reference to FIA 2015 technical regulations and FIA/SCCA safety requirements. 2024-03-01 ITB Honda Fit 2016 - 2020 Request #34907cars addedcars addedHonda Fit MT and CVT 2015-2019 added to ITB at 2525 lbs, may run B-Spec or IT spec. 2023-11-01 FX FM Rules Update #34841wordingunclearUnable to summarize: FX Formula Mazda spec changes reference attached document not provided. 2023-06-01 FX USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC #34329cars addedcars addedUSF2000 Van Diemen with Mazda MZR LF-DE 2.0L added as spec line car in FC; removed from FX. 2023-02-01 FX E&O - Remove references to FB and FM in GCR section 1.4.2.D #33725wordingwordingFX: Wording clarified to remove references to FB and FM in GCR section 1.4.2.D. 2022-12-01 FX Reclassify 2010-2017 Formula Renault 2.0 as a spec line car in FA #33395cars addedfasterFormula Renault 2.0 (10-17) reclassified from FX to FA; weight reduced to 1280 lbs, restrictor removed. 2022-08-01 FX Pro Formula F2000/USF2000 Transmission E&O #32823engineslowerPro Formula F2000 tube frame reduced to 4 forward gears, sequential carries 25 lb. weight penalty. 2022-08-01 FX Formula Mazda Minimum Weight #33010weightslowerFX Formula Mazda minimum weight exception set to 1270 lb. 2022-08-01 FX Formula Mazda Spec Line E&O Corrections #33011engineunclearFX Formula Mazda engine spec changed to six-port 13B only; weight now per notes instead of 1350/1400. 2022-07-01 FX Formula Renault 2.0 (10-17) Intake Restrictor #32745inductionslowerFormula Renault 2.0 (10-17) now requires 45mm Flat Plate Intake Restrictor; fairings prohibited before or after. 2022-07-01 FX Allow Performance Electronics PE3-8400 for USF2000 MZR #32767wordingwordingUSF2000 Tube Frame may now use Performance Electronics PE3-8400 ECU as alternative to Pectel T2.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST22MAR122022-03-12								1:28.346Trent Walko · fastest of 4 · top 4 within 6.6s+0.215s (+0.24%)	1:25.399Trent Walko · fastest of 4 · top 4 within 5.7s-2.391s (-2.72%)	137.1Trent Walko+2.7 mph (+2.0%)
7 rule changes (FX: 7)4 tyres & wheels · 1 cars added · 1 wording · 1 other · Formula Mazda tire marking no longer required; compliance now referenced to updated online specifications document. · FX Formula 4 tire choice becomes unrestricted; must comply with FIA F4 2015 Technical Regulations and subsequent safety requirements. · FX USF2000 Tube Frame front tyre changes from radial to unspecified type, rear tyre options added. · FX Formula Renault 2.0 (00-17) tire choice unrestricted; original components required except repairs. · FX USF2000 Tube Frame allows Hoosier radials 20.5x7.0x13 front and 22.5x8.0x13 rear, FC-compliant shocks, Wilwood brakes, Bosch spark plugs. · FX USF2000 Tube Frame now allows any Hoosier radial tire 20.5x7.0x13 front, 22.5x8.0x13 rear. · FX adds 2000-2009 Formula Renault 2.0 / Fran-Am 2000 classified at 1250 lbs with sealed 2.0L Renault F4R 832 engine.showhide 2022-02-01 FX FM Rule Set Clarification #31881wordingwordingFormula Mazda tire marking no longer required; compliance now referenced to updated online specifications document. 2022-02-01 FX E&O F4 Tires #31940tyres & wheelsfasterFX Formula 4 tire choice becomes unrestricted; must comply with FIA F4 2015 Technical Regulations and subsequent safety requirements. 2022-02-01 FX E&O USF2000 Tube Frame #31951tyres & wheelsunclearFX USF2000 Tube Frame front tyre changes from radial to unspecified type, rear tyre options added. 2022-02-01 FX URGENT - FX- Formula Renault Tire #32058tyres & wheelsfasterFX Formula Renault 2.0 (00-17) tire choice unrestricted; original components required except repairs. 2021-08-01 FX Rules Adjustment #30950otherotherFX USF2000 Tube Frame allows Hoosier radials 20.5x7.0x13 front and 22.5x8.0x13 rear, FC-compliant shocks, Wilwood brakes, Bosch spark plugs. 2021-06-01 FX FX/FRP Tire Rule #30723tyres & wheelstyres & wheelsFX USF2000 Tube Frame now allows any Hoosier radial tire 20.5x7.0x13 front, 22.5x8.0x13 rear. 2021-05-01 FX Classify the 2000-2009 Formula Renault 2.0 / Fran-Am 2000 #30460cars addedcars addedFX adds 2000-2009 Formula Renault 2.0 / Fran-Am 2000 classified at 1250 lbs with sealed 2.0L Renault F4R 832 engine.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST21MAR192021-03-19								1:28.131Austin Hill · fastest of 6 · top 5 within 3.8s	1:27.790Austin Hill · fastest of 6 · top 5 within 4.1s	134.4Austin Hill
16 earlier rule changes on record, in force before Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta (from 2019)9 cars added · 1 engine · 1 weight · 5 wording · Toyota Camry 1987-91 4 Cyl DOHC 1998cc added to ITA at 2255 lbs minimum weight. · ITB now allows B-Spec prepared vehicles to compete if compliant with current B-Spec rules for that vehicle. · Formula Renault 2.0 (2010–2017) newly classified in FX, must comply with Table 1 notes. · FX FormulaSPEED FS2.0 specification requirements updated; World Speed Inc. deadline removed, compliance now per SCCA website. · ITR Honda Accord V6 Coupe 03-05 and 06-07 newly classified at 3175 lbs minimum weight. · Formula Ireland / Formula FX added to FX classification under Table 1 with compliance notes. · Formula Ireland/Formula FX car addition to FX Table 1 pending specification submission; not recommended. · Improved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. · Ex-Pro Formula Super Vee classified in FX with 1190 lbs minimum weight, 1600cc or 1835cc VW engine, 6in front and 8in rear wheels. · FormulaSPEED reclassified from FA to FX with 2.0L Mazda MZR engine, 1350 lbs minimum weight, sealed ECU and dampers. · FX Formula Mazda no longer requires tire marking; must comply with December 2019 GCR rules. · Pro Formula F 2000 Tube Frame engine now must follow current FC rules with restricted ECU map, cams, and air restrictor required. · ITA Ford Escort ZX2 year range extended to 2003, minimum weight reduced to 2355 lbs. · ITB Mini Cooper extended to 2013 model year, allowed in B-Spec or IT specification with respective weights. · IT classes renumber intake and fuel system rules under 9.3.1.D.1, clarify throttle linkage and electronic throttle restrictions. · ITB dual-classifies Honda Fit 09-13 at 2270 lbs and 14-15 at 2705 lbs, plus seven other B-Spec cars into ITC.showhide 2021-03-01 ITB Request 2nd Generation Camry to ITB #30007cars addedcars addedToyota Camry 1987-91 4 Cyl DOHC 1998cc added to ITA at 2255 lbs minimum weight. 2021-03-01 ITB Request for Car Eligibility #30070wordingwordingITB now allows B-Spec prepared vehicles to compete if compliant with current B-Spec rules for that vehicle. 2021-01-01 FX Request for Car Classification to Compete in Formula X #29933cars addedcars addedFormula Renault 2.0 (2010–2017) newly classified in FX, must comply with Table 1 notes. 2020-12-01 FX Update specifications for FormulaSPEED cars #29674wordingwordingFX FormulaSPEED FS2.0 specification requirements updated; World Speed Inc. deadline removed, compliance now per SCCA website. 2020-12-01 ITB Request to classify a 2003 Honda Accord #28898cars addedcars addedITR Honda Accord V6 Coupe 03-05 and 06-07 newly classified at 3175 lbs minimum weight. 2020-09-01 FX Follow up to to Letter#28991 Request for FX classification #29281cars addedcars addedFormula Ireland / Formula FX added to FX classification under Table 1 with compliance notes. 2020-07-01 FX Request to be added to FX group #28991cars addedcars addedFormula Ireland/Formula FX car addition to FX Table 1 pending specification submission; not recommended. 2020-05-01 ITB Cleanup 4.f Traction control #28609wordingwordingImproved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. 2020-04-01 FX Request to classify FSV in FX #28057cars addedcars addedEx-Pro Formula Super Vee classified in FX with 1190 lbs minimum weight, 1600cc or 1835cc VW engine, 6in front and 8in rear wheels. 2020-04-01 FX Classify FormulaSPEED in FX #28715cars addedcars addedFormulaSPEED reclassified from FA to FX with 2.0L Mazda MZR engine, 1350 lbs minimum weight, sealed ECU and dampers. 2020-03-01 FX Request to remove tire marking language from FM #28415wordingwordingFX Formula Mazda no longer requires tire marking; must comply with December 2019 GCR rules. 2020-02-01 FX Change to FX Table 1 #28322engineslowerPro Formula F 2000 Tube Frame engine now must follow current FC rules with restricted ECU map, cams, and air restrictor required. 2019-08-31 ITB Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbsfasterITA Ford Escort ZX2 year range extended to 2003, minimum weight reduced to 2355 lbs. 2019-08-31 ITB Request to allow 07-11 Mini in ITB as BPSEC configuration #26997cars addedcars addedITB Mini Cooper extended to 2013 model year, allowed in B-Spec or IT specification with respective weights. 2019-05-01 ITB Request clarification on 9.1.3 D1.A.2 #26237wordingwordingIT classes renumber intake and fuel system rules under 9.3.1.D.1, clarify throttle linkage and electronic throttle restrictions. 2019-01-01 ITB Request to Dual-Class Honda Fit and B-Spec Cars Into ITC and #25347cars addedcars addedITB dual-classifies Honda Fit 09-13 at 2270 lbs and 14-15 at 2705 lbs, plus seven other B-Spec cars into ITC.

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. 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.