You don't even need to race them. My understanding that is turning the engine on is enough to lock them in.PlatinumZealot wrote:In other words any engine upgrades you qualify with cannot be recalled and switched out. The tokens cannot be reverted once you have raced them.
However, if you for instance used a on older allocation of the pu earlier in the year and want to use that one again later on, you are allowed to do so, even if the tokens aren't applied on that allocation.