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2013-14 Shelby GT500
91 Octane?
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<blockquote data-quote="Nomad 34" data-source="post: 13557194" data-attributes="member: 155825"><p>Simon C,</p><p></p><p>I had my 2013 (4200 miles) on the dyno for the first time last week. On 91 octane (stock), max power/ torque readings were: 614.40hp/631.46tq. It was 79 degrees outside and these numbers were the lowest of two stock pulls. As you said, numerous reviewers have achieved better “stock” results than Edmunds. Compared with various owners’/reviewers data, Edmunds’ findings may seem to be the exception or an anomaly. However, there are many variables to consider that affect performance. For example, increased temp/humidity can lead to heat soak or cause factory installed safeguards to reduce power. </p><p></p><p>The same day of dyno testing I had Revan Racing’s 13-6 kit (JLT CF 127mm intake, FRPP 65mm throttle body, and Lund tune) installed, and the output changed: 644.14/645.50. I assumed the numbers from the kit should have been substantially greater, but the ambient temperature had increased to 92 degrees and the car IAT was very high; thereby, affecting performance. In this case, I do not think the “GT500 loses significant power when run on anything less than premium.” This is my first post on SVTPerformance.com; so make of it what you will. I am sure there are far more knowledgeable members that can help add to the discussion.</p><p></p><p></p><p>- Nomad 34</p></blockquote><p></p>
[QUOTE="Nomad 34, post: 13557194, member: 155825"] Simon C, I had my 2013 (4200 miles) on the dyno for the first time last week. On 91 octane (stock), max power/ torque readings were: 614.40hp/631.46tq. It was 79 degrees outside and these numbers were the lowest of two stock pulls. As you said, numerous reviewers have achieved better “stock” results than Edmunds. Compared with various owners’/reviewers data, Edmunds’ findings may seem to be the exception or an anomaly. However, there are many variables to consider that affect performance. For example, increased temp/humidity can lead to heat soak or cause factory installed safeguards to reduce power. The same day of dyno testing I had Revan Racing’s 13-6 kit (JLT CF 127mm intake, FRPP 65mm throttle body, and Lund tune) installed, and the output changed: 644.14/645.50. I assumed the numbers from the kit should have been substantially greater, but the ambient temperature had increased to 92 degrees and the car IAT was very high; thereby, affecting performance. In this case, I do not think the “GT500 loses significant power when run on anything less than premium.” This is my first post on SVTPerformance.com; so make of it what you will. I am sure there are far more knowledgeable members that can help add to the discussion. - Nomad 34 [/QUOTE]
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