BoP Lab / Buttonwillow Raceway Park

FE2 vs SMX pace at Buttonwillow Raceway Park

Quickest here: FE2 1:39.265 Jon McClintock, Cal Club 2026 qualifying · SMX 1:56.431 Ethan Lampe, Cal Club 2025 qualifying

Lap times% of FE2

FE2SMXsolid race · dashed qualifying · slower is lower

FE2SMXsolid race · dashed qualifying · each class's best lap as a share of FE2's at the same event (the reference class, changeable above); 100% is level, higher is quicker

	Event	FE2			SMX
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs FE2	% of FE2
	Cal Club 2026 CALCL262026-02-21	1:39.265Jon McClintock · fastest of 3 · top 3 within 1.5s-0.093s (-0.09%)	1:40.253Jon McClintock · fastest of 3 · top 3 within 2.2s+0.541s (+0.54%)	156.6Paul Marino+29.4 mph (+23.1%)	1:56.503Lincoln Larson · fastest of 15 · top 5 within 0.7s+0.072s (+0.06%)	1:57.973William Wallis · fastest of 15 · top 5 within 0.8s+0.556s (+0.47%)	141.6Joey Andrews+28.0 mph (+24.6%)	+17.720squal +17.238s	117.7%qual 117.4%
6 rule changes (FE2: 2, SMX: 4)6 wording · FE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration. · SMX drivers must submit data acquisition files on time or face suspension and $250 fine. · SMX penalty language clarified: level 1 and 3 infractions may carry $1,000 fine; level 2 and 4 may carry $500 fine. · SMX Toyo RR P235/40/ZR17 tire rules clarified: one set per weekend, marking after first session, damage replacement procedures revised. · SMX data submission deadline extended from 30 to 60 minutes after each timed session. · FE2 allows driver safety and comfort modifications for disabled drivers with SCCA approval, not transferable to other drivers.showhide 2025-10-01 FE2 FE & FE2 Bubble Tail #38978wordingneutralFE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration. 2025-06-01 SMX SMX Data Submission - Penalties #38248wordingneutralSMX drivers must submit data acquisition files on time or face suspension and $250 fine. 2025-06-01 SMX Committee) SMX Penaly Clarification updated language #38337wordingneutralSMX penalty language clarified: level 1 and 3 infractions may carry $1,000 fine; level 2 and 4 may carry $500 fine. 2025-05-01 SMX Clarify Tire Marking Regs #38004wordingneutralSMX Toyo RR P235/40/ZR17 tire rules clarified: one set per weekend, marking after first session, damage replacement procedures revised. 2025-05-01 SMX SMX Data Submission Timeframe #38039wordingneutralSMX data submission deadline extended from 30 to 60 minutes after each timed session. 2025-04-01 FE2 Driver Safety & Comfort #37965wordingneutralFE2 allows driver safety and comfort modifications for disabled drivers with SCCA approval, not transferable to other drivers.
	Cal Club 2025 CALCL252025-02-22	1:39.358Paul Marino · fastest of 4 · top 4 within 1.5s	1:39.712Paul Marino · fastest of 4 · top 4 within 1.7s	127.2Tom Hope	1:56.431Ethan Lampe · fastest of 15 · top 5 within 1.5s	1:57.417Ethan Lampe · fastest of 15 · top 5 within 1.6s	113.6Ryan Gutile	+17.705squal +17.073s	117.8%qual 117.2%
7 earlier rule changes on record, in force before Cal Club 2025 (from 2019)1 weight · 6 wording · SMX allows OE instrument cluster relocation for aftermarket dash mounting, with wiring re-routed only; alternate gauges now permitted. · SMX Spec MX-5 camera requirement wording changed; non-functioning recorder now grounds for penalty or disqualification. · SMX Spec MX-5 must run latest AIM Data Logger Spec MX-5 ECU Protocol; wording clarification for technical compliance. · SMX Mazda Miata OE versus OEM definitions clarified in GCR Section 9.1.7.1. · SM and SMX shifter bushing rules clarified: alternate bushing at shift lever bottom now allowed. · FE2 oil cooler wording clarified: optional air-to-oil cooler allowed, Setrab 50-625-7612 or equivalent max 13 inches wide by 6.5 inches high. · FE and FE2 minimum weight increased to 1270 lbs including driver; spring options and tire warmer ban added.showhide 2024-12-01 SMX E&O SMX Regs 9.1.7.1.D.5.u-.w #37070wordingneutralSMX allows OE instrument cluster relocation for aftermarket dash mounting, with wiring re-routed only; alternate gauges now permitted. 2024-09-01 SMX SMX Camera Rule Correction #36496wordingneutralSMX Spec MX-5 camera requirement wording changed; non-functioning recorder now grounds for penalty or disqualification. 2024-09-01 SMX Committee) AIM ECU Protocol #36556wordingneutralSMX Spec MX-5 must run latest AIM Data Logger Spec MX-5 ECU Protocol; wording clarification for technical compliance. 2024-09-01 SMX Committee) OE versus OEM Definitons #36608wordingneutralSMX Mazda Miata OE versus OEM definitions clarified in GCR Section 9.1.7.1. 2024-09-01 SMX Committee) Shifter Bushing #36611wordingneutralSM and SMX shifter bushing rules clarified: alternate bushing at shift lever bottom now allowed. 2020-09-01 FE2 FE/FE2 Oil Cooler #29293wordingneutralFE2 oil cooler wording clarified: optional air-to-oil cooler allowed, Setrab 50-625-7612 or equivalent max 13 inches wide by 6.5 inches high. 2019-12-01 FE2 FE / FE2 Update Rules #27624weightslowerFE and FE2 minimum weight increased to 1270 lbs including driver; spring options and tire warmer ban added.

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 FE2" is the class's best as a share of FE2'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 FE2'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.