BoP Lab / Michelin Raceway Road Atlanta

ITB vs F6 vs FE pace at Michelin Raceway Road Atlanta

Quickest here: F6 1:30.014 Clint McMahan, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta qualifying

ITBF6FEsolid race · dashed qualifying · slower is lower

	Event	ITB			F6				FE
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs ITB	Qual best	Race best	Trap	vs ITB
	Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST26MAR062026-03-06				1:30.039Calvin Stewart · fastest of 4 · top 4 within 13.3s+0.025s (+0.03%)	1:33.719H Cory Mcleod · fastest of 3 · top 3 within 14.2s+3.452s (+3.82%)	137.8Calvin Stewart+5.7 mph (+4.3%)
9 rule changes (ITB: 2, FE: 7)9 wording · Turbocharged and supercharged cars ineligible for IT classes unless explicitly listed. · FE adds engine management testing requirements, refusal penalties, and drivetrain violation procedures with post-event assessment. · FE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration. · FE2 Mazda MZR engine mandatory spec components clarified with part number updates; intake manifold, ECU, harness, PCV, spark plug, muffler, sensors specified; wording standardized. · FE must use SCCA Enterprises Part # WM803010 brake line to control arm covers as delivered, secured with zip ties or tape. · FE and SRF protest fee structure removed, now references GCR section 8.3.1.D for fees and payment procedure. · FE Hoosier contingency decal requirement reduced from five to three decals with simplified placement rules. · FE requires five Hoosier decals in specified locations: one small on nose or front shock cover, two 12" on front wing plates, two 12" on lower floor panels. · IT classes battery replacement rules relaxed; amp-hour capacity and weight restrictions removed.showhide 2026-02-01 ITB E&O: Turbo Cars in IT #39691wordingwordingTurbocharged and supercharged cars ineligible for IT classes unless explicitly listed. 2026-01-01 FE FE & FE2 Rule Updates #39484wordingwordingFE adds engine management testing requirements, refusal penalties, and drivetrain violation procedures with post-event assessment. 2025-10-01 FE FE & FE2 Bubble Tail #38978wordingwordingFE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration. 2025-09-01 FE FE & FE2 Rule Updates #38901wordingwordingFE2 Mazda MZR engine mandatory spec components clarified with part number updates; intake manifold, ECU, harness, PCV, spark plug, muffler, sensors specified; wording standardized. 2024-12-01 FE Brake Line to A-Arm Covers #37110wordingwordingFE must use SCCA Enterprises Part # WM803010 brake line to control arm covers as delivered, secured with zip ties or tape. 2024-09-01 FE Protest Fee Clarification #36540wordingwordingFE and SRF protest fee structure removed, now references GCR section 8.3.1.D for fees and payment procedure. 2024-09-01 FE Update on Letter 36620 with new Hoosier Contingency Decal Info #36625wordingwordingFE Hoosier contingency decal requirement reduced from five to three decals with simplified placement rules. 2024-08-01 FE Hoosier Tire Decal Placement #36435wordingwordingFE requires five Hoosier decals in specified locations: one small on nose or front shock cover, two 12" on front wing plates, two 12" on lower floor panels. 2024-04-01 ITB Battery Change #35854wordingwordingIT classes battery replacement rules relaxed; amp-hour capacity and weight restrictions removed.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST24MAR082024-03-08				1:30.014Clint McMahan · fastest of 8 · top 5 within 4.6s-5.777s (-6.03%)	1:30.267Clint McMahan · fastest of 8 · top 5 within 4.8s-4.980s (-5.23%)	132.1Calvin Stewart-3.7 mph (-2.7%)
4 rule changes (ITB: 1, FE: 3)1 cars added · 3 wording · Honda Fit MT and CVT 2015-2019 added to ITB at 2525 lbs, may run B-Spec or IT spec. · FE rain light must meet FIA Standard 8874-2019, Technical List No. 76, effective 1/1/2024. · FE allows racer's tape for crash damage and fastener securing, prohibits body seam taping, permits heat exchanger taping only. · FE SADEV transmission ratios removed from review notice prior to sealing date.showhide 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. 2024-01-01 FE Update FE Rain Light Rule #34707wordingwordingFE rain light must meet FIA Standard 8874-2019, Technical List No. 76, effective 1/1/2024. 2024-01-01 FE FE/FE2 rule update #35269wordingwordingFE allows racer's tape for crash damage and fastener securing, prohibits body seam taping, permits heat exchanger taping only. 2023-04-01 FE Update FE SADEV Transmission Rule #33883wordingwordingFE SADEV transmission ratios removed from review notice prior to sealing date.
	Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST23MAR102023-03-10				1:35.791George Bugg · fastest of 5 · top 5 within 8.8s	1:35.247H Cory McLeod · fastest of 5 · top 5 within 9.3s	135.8Jack Walbran
28 earlier rule changes on record, in force before Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta (from 2019)6 cars added · 4 tyres & wheels · 2 weight · 1 suspension & brakes · 15 wording · FE drivers may now adjust manual brake bias during racing. · FE front and rear wing assembly mounting and adjustment rules clarified; Gurney flap specifications and attachment methods detailed. · FE engine heat shield and insulation material now permitted to protect fuel cell, filter, rail, and lines. · FE tires must be run as delivered in sets of 4. · FE master cylinder specifications clarified: Girling front .700" piston WM802005, rear .750" WM802006. · FE2 Enterprise windscreen restricted to P/N WM137000; racer's tape allowed for crash damage repair, body panel securing, but not taping of body seams. · FE removes tire marking and qualifying session requirements for wet race starts; rain tire rules simplified. · FE radiator screens clarified: may not protrude more than ¼ inch in front of sidepods. · FE radiator screens allowed and recommended, positioned no more than ¼ inch from sidepod front vertical plane. · 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. · FE front springs increase to 800 lbs ±25 lbs, rear springs decrease to 900 lbs ±25 lbs, Hypercoil parts required. · ITR Honda Accord V6 Coupe 03-05 and 06-07 newly classified at 3175 lbs minimum weight. · FE Gurney flap specs clarified: front wing secondary elements limited to .500" ± .030", wing elements to .250" ± .030". · FE Gurney flap wording clarified: permitted on front wing secondary elements only, not main plane. · FE spring rule update effective date moved from June 1 to November 1, 2020. · Improved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. · FE2 class created for 2.0L MZR engine at 1250 lbs minimum; FE 2.3L becomes Regional only through 2019 Runoffs. · FE and FE2 minimum weight increased to 1270 lbs including driver; spring options and tire warmer ban added. · FE wet tire rear width increases from 7.5 to 8.0 inches, Hoosier 44196 W3. · 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. · FE removes American Racer tires, mandates Hoosier dry 22.0 x 8.0-13 FE front and 22.0 x 10.0-13 FE rear. · FE anti-roll bars may run disconnected; one link removable front, rear, or both for safety. · FE and FE2 Enterprise bubble tail P/N WM138014 newly allowed for both classes. · IT classes renumber intake and fuel system rules under 9.3.1.D.1, clarify throttle linkage and electronic throttle restrictions. · FE wet tires updated: front Hoosier 44195 W3 and rear 44217 W3, WET designation removed. · 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 2022-10-01 FE Brake bias adjuster clarification #33084wordingwordingFE drivers may now adjust manual brake bias during racing. 2022-10-01 FE FE Front and Rear Wing Update & Clarification #33089wordingwordingFE front and rear wing assembly mounting and adjustment rules clarified; Gurney flap specifications and attachment methods detailed. 2022-09-01 FE Engine Heat Shield & Insulation #33019wordingwordingFE engine heat shield and insulation material now permitted to protect fuel cell, filter, rail, and lines. 2022-06-01 FE Update FE/FE2 Tire Rule #32613tyres & wheelstyres & wheelsFE tires must be run as delivered in sets of 4. 2022-06-01 FE Master cylinder clarification #32669wordingwordingFE master cylinder specifications clarified: Girling front .700" piston WM802005, rear .750" WM802006. 2021-12-01 FE Two FE2 Rule Updates #31524wordingwordingFE2 Enterprise windscreen restricted to P/N WM137000; racer's tape allowed for crash damage repair, body panel securing, but not taping of body seams. 2021-07-01 FE FE Tire Rule Changes #30754tyres & wheelstyres & wheelsFE removes tire marking and qualifying session requirements for wet race starts; rain tire rules simplified. 2021-07-01 FE Radiator Screens Clarification #30792wordingwordingFE radiator screens clarified: may not protrude more than ¼ inch in front of sidepods. 2021-06-01 FE FE Radiator Screens #30575wordingwordingFE radiator screens allowed and recommended, positioned no more than ¼ inch from sidepod front vertical plane. 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. 2020-12-01 FE FE / FE2 Spring Updates #29689suspension & brakessuspension & brakesFE front springs increase to 800 lbs ±25 lbs, rear springs decrease to 900 lbs ±25 lbs, Hypercoil parts required. 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. 2020-10-01 FE FE Gurney Flap Spec Update #29445wordingwordingFE Gurney flap specs clarified: front wing secondary elements limited to .500" ± .030", wing elements to .250" ± .030". 2020-06-01 FE FE Gurney flap wicker clarification #28885wordingwordingFE Gurney flap wording clarified: permitted on front wing secondary elements only, not main plane. 2020-05-01 FE FE spring rule update changed to November 1, 2020 #28814wordingwordingFE spring rule update effective date moved from June 1 to November 1, 2020. 2020-05-01 ITB Cleanup 4.f Traction control #28609wordingwordingImproved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled. 2020-01-01 FE Request for FE / FE2 preparation rules update #27722cars addedcars addedFE2 class created for 2.0L MZR engine at 1250 lbs minimum; FE 2.3L becomes Regional only through 2019 Runoffs. 2019-12-01 FE FE / FE2 Update Rules #27624weightslowerFE and FE2 minimum weight increased to 1270 lbs including driver; spring options and tire warmer ban added. 2019-10-01 FE FE Wet Tire E&O #27365tyres & wheelsfasterFE wet tire rear width increases from 7.5 to 8.0 inches, Hoosier 44196 W3. 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. 2019-07-01 FE FE Tire Update #27029tyres & wheelsunclearFE removes American Racer tires, mandates Hoosier dry 22.0 x 8.0-13 FE front and 22.0 x 10.0-13 FE rear. 2019-05-31 FE FE Anti-Roll Bar Clarification #26912wordingwordingFE anti-roll bars may run disconnected; one link removable front, rear, or both for safety. 2019-05-31 FE FE / FE2 Updated Bubble Tail Rule #26913cars addedcars addedFE and FE2 Enterprise bubble tail P/N WM138014 newly allowed for both classes. 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. 2019-03-01 FE Request to Update Hoosier Rain Tire Part Number for the FE cars #26235wordingwordingFE wet tires updated: front Hoosier 44195 W3 and rear 44217 W3, WET designation removed. 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.