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The Terminator
Engine/Tuning
Whipple 15 psi on 91 octane - ideal timing
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<blockquote data-quote="SVTkel" data-source="post: 8197630" data-attributes="member: 34372"><p>I just moved to a remote location that only has 91 octane. My car was dyno tuned for 94 octane and a base 91 tune was provided. </p><p></p><p>Details:</p><p>04 Cobra</p><p>Gen 2 Whipple 3.5 pulley at a max of 15 psi</p><p>Other typical mods are catback, TB, RAI, HE, etc</p><p>91 Octane</p><p></p><p>So I loaded the base 91 octane tune and dropped the timing back a bit and added some fuel and I will test the car until I am satisfied that the gas is okay here (note not many run 91 octane so it likely sits for a longer period of time).</p><p></p><p>Did a bit of datalogging with only my Aeroforce guages and noted that my timing was 20 degrees up top on 15 psi and my AFR is low 11's to high 10's.</p><p></p><p>I did some research and did not find as much information as I wanted to determine <strong><u>what is a safe and optimal timing # on 15psi at redline with an AFR of low 11's on 91 octane?</u></strong></p><p></p><p>Seems to me this is in the upper range of typical / safe?</p><p></p><p>Thanks</p></blockquote><p></p>
[QUOTE="SVTkel, post: 8197630, member: 34372"] I just moved to a remote location that only has 91 octane. My car was dyno tuned for 94 octane and a base 91 tune was provided. Details: 04 Cobra Gen 2 Whipple 3.5 pulley at a max of 15 psi Other typical mods are catback, TB, RAI, HE, etc 91 Octane So I loaded the base 91 octane tune and dropped the timing back a bit and added some fuel and I will test the car until I am satisfied that the gas is okay here (note not many run 91 octane so it likely sits for a longer period of time). Did a bit of datalogging with only my Aeroforce guages and noted that my timing was 20 degrees up top on 15 psi and my AFR is low 11's to high 10's. I did some research and did not find as much information as I wanted to determine [B][U]what is a safe and optimal timing # on 15psi at redline with an AFR of low 11's on 91 octane?[/U][/B] Seems to me this is in the upper range of typical / safe? Thanks [/QUOTE]
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Engine/Tuning
Whipple 15 psi on 91 octane - ideal timing
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