MP 1693: The Week In IndyCar Listener Q&A April 24 2026

The Acura Grand Prix of Long Beach is a major IndyCar race held on a street circuit in Long Beach, California. It’s a key stop on the IndyCar calendar and often sets the tone for early-season form.

IMS refers to Indianapolis Motor Speedway, the home of the Indy 500 and a central venue for IndyCar. When the host says “IMS in May,” it’s pointing to the season’s biggest stretch and the buildup to the Indy 500.

The Indy Open Test is a track testing event associated with IndyCar, where teams run cars to evaluate setups and gather data. It’s typically where you’ll see the most current cars and technologies before the next race weekend.

IMSA is the sports-car racing organization that runs multi-class events in North America. “IMSA action” here implies they’re attending an IMSA weekend with prototype and/or GT-style race cars.

Laguna Seca is a famous road course in California (not a car), known for its elevation changes and the “Corkscrew” corner. In this segment, it’s referenced as the venue for IMSA racing.

The Long Beach Grand Prix is a major motorsport event held on a street circuit in Long Beach, California. In this discussion, it’s framed as a multi-era event that evolved from early street racing into a world-class open-wheel race and later expanded to include sports cars and other categories.

A “street race” is racing that takes place on public roads rather than a purpose-built track. The hosts use this to describe the early origins of the Long Beach event before it became a professional, world-class race weekend.

Formula One (F1) is the top level of open-wheel racing, with teams competing in a global championship. The segment notes that the Long Beach event at one point hosted F1-level racing, highlighting its prestige and evolution.

The IndyCar series is a premier American open-wheel racing championship. The hosts describe how the Long Beach event evolved into what people now associate with IndyCar, while also expanding to other racing types.

“Champ Car” refers to the CART/Championship Auto Racing Teams era of American open-wheel racing. The hosts mention it as one of the historical stages the Long Beach event went through on its way to today’s IndyCar identity.

The American Le Mans Series (ALMS) was a North American sports-car racing series that used rules and car classes inspired by the 24 Hours of Le Mans. The segment lists it as a predecessor to what IMSA became, showing the lineage of sports-car racing at these events.

GT typically refers to Grand Touring race cars, a class of production-based sports cars used in endurance racing. In this segment, it’s mentioned as one of the types of cars that appeared at the Long Beach event as classes changed over time.

The Long Beach Grand Prix is a street-racing event that mixes on-track action with off-track entertainment. In this segment, the hosts use it as an example of how the weekend’s schedule and atmosphere can shape what fans experience.

Formula D is a drifting competition series, and it’s mentioned here as part of the Long Beach weekend. That matters because it highlights how IndyCar events can share the venue with other motorsport disciplines, changing the overall fan mix.

A “waved off” start means officials cancel the initial green-flag attempt and reset the field due to an unsafe or unacceptable situation. The discussion here is about whether the Long Beach start should have been waved off after a large early gap.

Pit lane is where teams service cars and where officials and team personnel communicate during a race weekend. The segment mentions a conversation on pit lane toward the end of the race about how bad the start was.

This refers to the controlled start procedure where cars stage and creep into position under starter control before the green flag. The hosts emphasize there’s a “middle ground” timing-wise: not too early (chaotic) and not too late (slow, crawling formation).

A hairpin is a very tight, slow-speed corner that forces cars to brake hard and turn sharply. In racing, it’s a common place for congestion and mistakes because cars arrive close together and drivers have limited room to maneuver.

“Curblamo” is a slang way to describe hitting the curb—often violently—during a corner. In racing, curb strikes can unsettle the car, damage tires/wheels, or trigger spins, especially when the field is packed.

The hosts discuss how and when the green flag should be thrown—especially at Long Beach—because timing affects how bunched-up the field is when they reach key corners like the hairpin and Turn 1. The “perfect balance” is about avoiding both too-early and too-late restarts that increase crash risk.

This segment highlights how restart procedures depend on correct rule enforcement—sometimes via onboard systems and race-control software. When a system fails (like Push to Pass not turning off), it can change race outcomes and triggers post-race officiating actions.

A “lap 61 restart” refers to the race being resumed on lap 61 after a caution period. Restarts are high-risk moments because cars are bunched up and drivers must time acceleration and rule-boost usage precisely.

A caution is when race control slows the field due to an incident on track, typically using yellow flags and a safety car procedure. During cautions, teams and officials can review events, but penalties still have to be applied within the race’s remaining time and safety constraints.

“Move to the back of the field” is a penalty concept where officials reorder affected cars to restart/continue behind everyone else. The discussion highlights the practical challenge of doing this for many cars (like 12) during an active green-flag run without creating additional risk or confusion on track.

A drive-through penalty requires a car to enter the pit lane and pass through at a controlled speed without stopping. It’s commonly used in open-wheel racing as a way to penalize rule violations while keeping the race moving.

In IndyCar, the “push to pass” button temporarily boosts engine output so a driver can gain speed for passing or defending. It’s governed by rules and timing, and using it when it’s supposed to be off (like during certain restarts) can lead to penalties or controversy. The hosts discuss how drivers develop habits around it and how officials evaluate whether it creates an on-track advantage.

Penalties are rule-enforcement actions applied when a driver violates IndyCar regulations, such as using push-to-pass at an incorrect time. In this segment, penalties are discussed alongside the idea of “improvising penalties” late in a race, implying that timing and consistency of enforcement matter. The hosts also connect penalties to driver behavior and habits.

“On track advantage” refers to whether a rule-related action (like using push-to-pass at the wrong time) actually changes race outcomes in a measurable way. The hosts challenge a claim that there was no advantage by using a simplified power/boost example to argue that more output should translate into performance. This is essentially about how officials assess causality between rule events and lap-by-lap results.

The control box is the electronics module that manages vehicle systems and driver-selectable functions, including how features like push to pass are enabled or inhibited. The segment claims software changes to the control box allowed certain cars to bypass intended deactivation rules.

A software glitch is an unintended behavior caused by a problem in software logic or configuration. Here, the discussion contrasts “human error” vs “software,” with Ray Evernham indicating it was a software problem that left push to pass effectively enabled when it should have been off.

The hosts describe a Long Beach 2024 situation where push to pass was reportedly turned off for most drivers, but enabled for the Penske cars due to software/control-box modifications. They argue this created a single-team advantage that wasn’t shared by the rest of the field.

Penske refers to Team Penske, a major IndyCar organization known for strong engineering and race execution. In this segment, Penske is central because the discussion claims their cars had modifications that allowed push to pass to be used when it was disabled for others.

Race control is the centralized officiating/operations group that oversees on-track events, including flags, timing decisions, and penalties. The segment emphasizes that even if some personnel are the same, differences in independent officiating can change how penalties are assessed.

The “yellow line” is a track boundary used in IndyCar rules to define where certain maneuvers are permitted or prohibited. The hosts use it as an analogy for rule compliance: if a rule says you can’t do something, drivers shouldn’t treat availability or exceptions as permission. It’s part of the broader discussion about how strictly rules should be enforced.

The hosts are discussing how rule enforcement should treat system glitches versus intentional rule-breaking. Even if a boost system is available due to a technical problem, the competitive intent is still that drivers should follow the spirit and letter of the regulations. This is a common officiating dilemma in motorsport: whether “it was available” counts as permission.

The Firestone pit stop performance award is a metric-based recognition for how quickly and consistently teams execute pit stops. Here, it’s used to compare pit stop timing between cars and to argue that the advantage is “metronomic” execution rather than occasional huge speed gains.

“Wheel on” and “wheel nut” are shorthand for the core actions of a tire change: mounting the wheel and securing it with the lug nuts. Pit crews train these steps to be fast and repeatable, because even small delays add up over multiple stops.

This describes how IndyCar pit stop timing is measured: from when the car crosses the timing stripe entering the pit lane to when it crosses the stripe after leaving the pit box and accelerating back out. Using this method, the hosts can compare pit crews fairly even if the cars enter and exit the pits at slightly different moments.

“Leapfrogging” on pit stops is when one car gains track position by pitting and rejoining ahead of another car that pitted earlier or later. It’s driven by the combination of pit stop speed, timing, and how long each car is in the pit lane before rejoining traffic.

In IndyCar strategy, consistency refers to repeatedly delivering similar performance—especially on pit stops and rejoining traffic—race after race. The hosts frame it as a “formula” for winning: be excellent when it counts (pit lane) and avoid costly mistakes rather than chasing every marginal advantage on track.

The hosts describe pit-crew “culture” as an established way of working that’s built over time and becomes repeatable under race pressure. They argue that long-term team cohesion—same people doing the same tasks—reduces variability and supports consistent pit stop performance.

This phrase is used when it’s unclear whether one factor causes the other. In racing terms, it can mean whether a team’s dominance creates consistent results, or whether other teams’ inconsistency makes the dominant team look even stronger.

A “championship hunt” is the season-long points battle to win the title. In series like IndyCar, teams can effectively fall out of contention if they miss too many races, finish too far back, or have frequent poor results.

“Running away” describes a dominant stretch where one team’s results create a growing points gap. The transcript frames 2026 as potentially repeating 2025’s dominance if the leading car keeps adding wins.

In IndyCar discussion, “grand slams” typically refers to a maximum-points weekend where a driver/team hits multiple bonus achievements in addition to winning. The idea here is whether the leader is stacking perfect weekends or if rivals are failing to deliver.

“Behind the scenes” refers to off-track work that influences on-track performance—like engineering changes, data analysis, simulation, and setup development. The transcript asks what areas need improvement to translate into better race pace and results.

“Struggle street” is an idiom meaning someone is having ongoing trouble. In racing, it often implies the car isn’t delivering the pace needed for qualifying and race results, or that strategy/execution hasn’t been clicking.

“8500” appears to be a points/threshold reference or a race-related number, but the transcript doesn’t provide enough context to confirm what it means. It’s likely tied to a target outcome in the season standings or a specific event.

Short ovals are oval tracks with relatively tight dimensions, which tend to demand different aerodynamic balance and mechanical grip than larger ovals. Drivers and teams often emphasize steering response, traction out of corners, and stability through traffic.

Detroit is an IndyCar street-course event, typically run on a downtown street layout. The host’s “by the month of May’s closure” comment frames Detroit as an upcoming stop where street-course experience and setup tailoring will matter.

An oval super speedway is a very high-speed oval track designed for long runs at sustained speed, often with steep banking. In IndyCar, these tracks emphasize aerodynamic efficiency, stability, and throttle management, so the car behavior and setup priorities differ from road courses.

A road course is a circuit made up of a mix of corners, braking zones, and varying radii, usually with less sustained high-speed running than ovals. In IndyCar, road courses tend to reward setup balance and driver technique, so a driver’s learning curve can look different than on ovals.

The “learning curve” refers to how drivers must adapt to different car characteristics, race formats, and driving styles when moving between Formula 1 and IndyCar. Even with elite talent, differences in tires, aerodynamics, downforce levels, and racecraft can take time to translate into consistent results.

“RLL” is referenced as a team that could invite the driver back, implying a role in IndyCar career planning. In IndyCar context, it typically stands for Rahal Letterman Lanigan, where driver-engineer fit and results can influence future opportunities.

An “engineering change” means the driver’s race engineer (or broader engineering support) changes, which can temporarily disrupt communication and feedback loops. In open-wheel racing, that relationship strongly affects setup direction, practice-to-race adjustments, and how quickly the driver can translate feel into actionable changes.

A “motor issue failure” indicates a mechanical/electrical problem severe enough to disrupt the weekend. The hosts connect it to lost practice time and a reduced opportunity to learn the track, which then affects qualifying and race performance.

Qualifying is the session where drivers set their grid position for the race. The hosts emphasize how impressive it was that the driver qualified well despite a difficult weekend.

Phoenix refers to the Phoenix Raceway oval where the driver’s performance is being evaluated. The hosts are using it as a benchmark for how well the driver handled an oval after a chaotic weekend.

Barber refers to Barber Motorsports Park, a road course in IndyCar. The hosts describe it as a “reboot” where the driver and engineer had a better vibe and communication, even if results weren’t remarkable.

“Indy GP” is the Indianapolis Grand Prix, an IndyCar road course event at Indianapolis Motor Speedway. The hosts frame it as the first “flat-ish” natural-terrain road course for the driver, with fewer extreme risks than tracks like Barber.

The Indy 500 (Indianapolis 500) is the biggest race on the IndyCar calendar and often the main benchmark for a team’s season. In listener Q&A, it’s used as a key moment to judge whether a driver/engineer can execute under pressure.

A “race engineering presence” means having a consistent, hands-on engineering lead working with the driver throughout race weekends. The goal is continuity in setup direction, feedback loops, and learning from one event to the next.

An associate or performance assistant engineer is typically a supporting role that helps analyze data, evaluate setups, and assist the lead race engineer. It’s a common development path toward becoming a full race engineer.

The “Long Beach open test” refers to pre-race testing at Long Beach, where teams can evaluate setups and driver/engineer communication. In this segment, the hosts argue that changing the race engineer and driver chemistry ahead of the month of May should be done at this test to maximize performance.

The paddock is the motorsport “team and industry” area where teams, officials, and personnel operate between sessions. When the host says “the paddock” is happy or unhappy, they mean the broader community’s sentiment about decisions and changes.

An engine tear down is when officials disassemble an engine to inspect internal components for compliance or potential rule violations. In IndyCar, whether an engine is torn down can depend on how the engine is sealed and what the inspection rules allow after a race.

A sealed engine is one that’s secured by the manufacturer/series so teams can’t open it without authorization. Sealing helps officials verify the engine hasn’t been tampered with between the race and any inspection.

When an engine inspection is done in a controlled environment, it’s typically to prevent contamination and ensure consistent handling of parts. This matters because teardown inspections are often used to compare components against expected conditions or compliance requirements.

“Charter” here refers to the formal IndyCar team/engine program structure that governs how manufacturers and teams participate and how resources are allocated. The host claims the charter for “shivy and honda” won’t change in a way that meaningfully raises competition—more about keeping it within manageable limits.

The idea being discussed is using a smaller 2.2-liter IndyCar engine (rebadged) in 2028 even after the series transitions to new 2.4-liter engines. In practice, it’s about whether teams/engine programs can keep enough engine supply and support for entries while the new engine era starts.

The segment proposes running “DW 12s” after 2028 with the new car at Indy. This is a specific racing-event/format planning discussion tied to the timing of the new engine and car rules.

The host argues that running (or rebadging) the older 2.2-liter engines alongside the new 2.4-liter program would effectively require funding two parallel engine efforts. That means more procurement, parts, and ongoing support to keep engines “alive,” rather than ramping down the older program.

The DW-12 refers to IndyCar’s current-generation engine package used in the series. The hosts discuss why keeping DW-12 cars/engines alongside the incoming “new cars” isn’t practical—teams and manufacturers want the grid to be fresh and aligned with the latest regulations and development direction.

“Tuned for sound” is about calibrating an engine and exhaust system so the car produces a specific auditory character. In this segment, the host explains that with a turbocharged engine, sound tuning is limited because the turbocharger and intake/exhaust design strongly determine the final noise.

A turbocharged engine uses a turbocharger to compress incoming air, which changes both performance and how the engine sounds. The host notes that sound tuning on a turbo motor is constrained because the turbocharger and related hardware dominate the audible character.

The turbocharger is the forced-induction component that compresses intake air using exhaust energy. Here, it’s described as a major contributor to the sound—headers feed into a sound-deadening device, and the turbocharger itself influences what the driver/audience hears.

A rev limit is the maximum engine speed the ECU will allow. The host argues that if the new engine keeps the same rev limit (and similar operating points), it won’t dramatically change the overall sound character—because the “high-pitched” quality is tied to how fast the engine is spinning.

This is a discussion of how engine displacement and forced induction affect sound. The host’s core point is that moving from a 2.2L to a 2.4L twin-turbo V6 doesn’t necessarily create a big audible change if key factors like rev limit and turbo/exhaust architecture stay similar.

The host contrasts modern turbo V6 sound expectations with the richer sound associated with CART-era turbo V8s around 2.6–2.65 liters. This is used to explain why fans remember a “high-pitched” or “ferocious” IndyCar sound from earlier generations.

Mercedes is included among the manufacturers whose engines are discussed in relation to higher rev behavior and sound. The host’s comparison suggests that rev characteristics across brands influenced the “pitch” fans associate with certain eras.

Toyota is referenced as one of the manufacturers in the IndyCar engine era being discussed. The host groups Honda/Toyota/Mercedes in terms of how their rev characteristics contributed to the overall sound evolution.

This is describing the characteristic high-pitched “scream” many turbocharged engines make under boost. It’s largely influenced by turbocharger speed, exhaust flow, and how the exhaust system is tuned, so changes to hardware or calibration can shift the sound character.

The speaker is outlining where sound can be influenced on a turbo engine: from the turbocharger outlet back through the exhaust headers and the rest of the exhaust system. In practice, exhaust geometry, pipe diameter/length, and muffling affect resonance and tone, while engine calibration can affect how and when boost is delivered.

“Tuning for sound” refers to adjusting engine calibration parameters (and sometimes exhaust-related settings) to change how the engine responds under load—especially during boost. Even without changing major hardware, small changes in throttle mapping, boost control, and ignition/exhaust strategies can alter the audible character.

McLaren is mentioned regarding hiring for the next season’s IndyCar entry (a “number six car”). In IndyCar, team staffing and driver lineup changes can affect development direction and testing priorities, which indirectly influences performance and how engines are run.