How iRacing’s New Pit Speed System Works in Season 3

iRacing redesigned pit road speed enforcement in Season 3 2026. The old system had a flaw: skilled drivers could achieve a slightly higher average speed on pit road by manually modulating the throttle. This happened because the limiter ran the car slightly under the speed limit to avoid triggering a penalty. The new iRacing pit speed limiter closes that gap. A PID controller now targets the exact maximum allowable speed, making enforcement consistent across every car in the field.

How the PID Controller Works

A PID controller (proportional-integral-derivative) is a feedback control algorithm used throughout engineering to maintain a target value. In this context, it continuously reads your current speed and compares it to the pit speed limit. It then adjusts throttle output to hold you right at that limit. The previous system ran a fixed, conservative target below the limit to avoid triggering overspeed penalties. Because the new system actively corrects toward the exact limit, it produces a more precise pit road speed for everyone.

iRacing also tightened enforcement tolerances alongside the system redesign. Pit speed rules are now slightly more strict, with reduced tolerance for brief overruns. However, the new limiter is designed to keep you on the right side of those stricter rules. Drivers who use the system correctly should find pit road easier to manage than before.

How to Drive Pit Road Under the New System

The key change in driver behavior is gear selection. The PID controller holds the engine at a fixed throttle position to maintain speed. Shifting gears while the limiter is active can cause a brief overspeed. That overspeed can trigger a penalty under the tighter enforcement rules. Therefore, the correct approach is to select your gear before the pit road entry line.

Once the limiter engages, hold full throttle and do not shift again until past the pit exit speed zone. Choose a gear that puts the engine in the middle of its RPM range at pit road speed, not at the top of the rev range. A correction oscillation at the top of the range can spike past the limit and result in a penalty.

A brief overspeed from a dead stop, for example when accelerating out of your pit box after service, is expected and accounted for in the new enforcement scheme. The system recognizes this as a normal acceleration event. You will not receive a penalty for the initial rollout from a stationary pit stop.

What This Means in Practice

For most drivers, the practical change is small. If you have been using the auto-limiter consistently, the new system behaves similarly. The main difference is that it now targets the exact limit rather than a conservative value below it. As a result, you are no longer giving away small fractions of time from being artificially slow through pit road.

For drivers who were manually modulating the throttle to beat the old limiter, that approach no longer works. The new controller produces consistent results that manual throttle work cannot improve on. Using the limiter is now the correct technique for every car in every series.

Additionally, the stricter enforcement tolerances mean there is less margin for error if you do overspeed. Entering pit road hot and hoping to bleed speed in time carries more risk than before. The safest approach is to lift early, select your gear, and let the limiter do the work from the entry line.