I just had my 2006 Porsche Cayman S tested at a reputable speed shop in the Denver, Co, area. The numbers were not very impressive, and I am looking for feed back from members with expert knowledge in this area. The speed shop did the test only, and I have attached my 4 run results--graphed. Suffice it to say the top number was a mere 256, this after an ECU reflash was done (adverstising stated a gain 'up to 30 hp') for $1000 plus and sending my ECU off for the work for one week. Gas: Shell 91 VPower. Anyone think I should ask for a refund?