Follow throtl's journey as they invest $30,000 in a $300 Nissan 300ZX, aiming for 600 horsepower with a fully built SR20 engine. Challenges arise during a Dyno test at Apex, but the team pushes forward, unveiling new apparel in collaboration with BC Racing. Predictions vary from 540 to 600 wheel horsepower, with the engine hitting 430 horsepower initially due to injector limitations. Stay tuned for the next thrilling chapter in this high-performance tuning adventure.