We enjoy repeat business, and in the case of this 350Z it has been 3 years and it came back for a retune with new mods and 104 octane race gas. The finishing touches were dialed in via our Uprev Pro Tuning suite on this beautiful road-race 350Z on our Dyno Dynamics dynamometer. The intake and free-flowing full exhaust worked quite well to achieve 248whp on the custom dyno tuned Osiris reflash and we wish the best luck to him during this season and next as he takes on Nasa Spec Z class.