Racing Plenum Kit and Tune Gains Power on Cayman S VRTuned.com March 4, 2011 Company News 4 Comments The 2008 Porsche Cayman S is a Tiptronic that runs on 91octane. As soon as the car came here, we did a baseline on our Mustang Dyno. Our baseline run yielded 217rwhp and 197ft/lbs of torque. Our Stage 2 mods consisted of the Racing Plenum with ECU Flash and a complete exhaust system with catless race headers. The plenum kit uses a larger throttlebody to improve the airflow coming into the engine. To fully take advantage of this, we do a custom ECU tune to alter the fuel and timing maps to account for the additional air flow. Like all normally aspirated vehicles, a good balanced exhaust system definitely helps out as well. We alter the limits on the O2 sensors to not throw a CEL from this catless setup. With all the new mods on, we did a follow up dyno. With all other variables kept consistant, the car made 252rwhp and 217ft/lbs of torque. That is a 35rwhp and 20ft/lbs of torque gain. Typically there is a 10-15% drivetrain loss on the Mustang dyno and since this is a Tiptronic and on 91octane, the results would be even great with a 6spd on 93octane. Overall dramatic driveability improvement and much better sound! 4 Responses daniel March 17, 2011 need ECU tuning for Cayman S 2010. Log in to Reply VRTuned.com March 17, 2011 Email sent! Log in to Reply Al August 21, 2011 Would it make any difference if i was using 98 octane fuel? Can the ECU tuning be maximised to 98 octane fuel? Log in to Reply VRTuned.com August 22, 2011 Your 98ron is 93oct so is the same. Log in to Reply Leave a Reply Cancel ReplyYou must be logged in to post a comment.