Bring your favourite BMW to Tim Slako's dyno on Saturday morning 17 October and have its power checked. See if it is still putting out the factory-specified kilowatts or if those performance mods you've made have produced the extra power you've hoped for.

Tim's dyno is set up for rear-wheel drive so your turn on the rollers is simple and trouble-free. Each run costs $75 and payment is via cash on the day.