Does that mean you're stuck in the slow lane? Not necessarily. While most professional No Hesi setups require the full 11 DLC packs to function properly, there are ways to get in on the action with just the base game. The Reality Check: Why DLC Usually Matters Assetto Corsa
Pro tip: Look for packs that explicitly state or "Custom Physics" in the description. Avoid packs that list "Requires: Japanese Pack, Red Pack, Porsche Pack."