So you think your ride is making power? Put it to the test on the lie detector of the tuning world - the dyno. Better yet, record your run on video and enter it in the UrbanRacer Video Dyno Challenge Powered By Castrol SYNTEC.

We"re looking for dyno supremacy and we have more than $1,000 in cash and prizes to give away each month to help our search. With two categories of competition - four and six cylinder (rotaries are welcome too) - and a selection process that includes public rating as well as judged criteria such as (significance, engineering, appearance, and video creativity), you"ve got a shot at the pot whether you roll with a 160 hp NA Civic or a 900 hp Supra.

Enter the Dyno Challenge by clicking here, or click here to check out the Official Rules.