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SVTPerformance's Chain of Restaurants
Tuning À la carte
SCT Tuning with a high octane gas
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<blockquote data-quote="SVT Lightning2003" data-source="post: 15972647" data-attributes="member: 192562"><p>Hi, first thread. long time reader as a guest.</p><p>I have an 03 Lightning, mod'ed up with the usual stuff before the internals get done. i have it dyno tuned for 91 octane pump gas and for 94 octane pump gas from the shop. my research on the use of the sct x3 that i have for the truck has shown that using a higher octane fuel will allow me to change the settings on the global spark by as much a +4 for the use of higher octane fuels. we have a local shop (afd petroleum) that makes the race fuels for the local circuit up to 120octane and i think higher for special applications. they do have pumps at the facility though that pump sl99 fuel at a mere $3.24 litre.</p><p>my question is easy i think but i thought i would ask the group before using it in my truck.</p><p></p><p>if i program the truck with the 94 octane program and then add a +4 to the global spark thus allowing me in theory (according to research) to run at 98 octane (99 actual) without losing the benefits of a higher octane fuel, will the result be the tune be what i need for driving using the program settings at 94 on the 99 fuel?</p><p>OR</p><p>Should i book an entirely new dyno appointment and have it completely re-tuned at the 99 octane level which the truck will be running on from now on?</p></blockquote><p></p>
[QUOTE="SVT Lightning2003, post: 15972647, member: 192562"] Hi, first thread. long time reader as a guest. I have an 03 Lightning, mod'ed up with the usual stuff before the internals get done. i have it dyno tuned for 91 octane pump gas and for 94 octane pump gas from the shop. my research on the use of the sct x3 that i have for the truck has shown that using a higher octane fuel will allow me to change the settings on the global spark by as much a +4 for the use of higher octane fuels. we have a local shop (afd petroleum) that makes the race fuels for the local circuit up to 120octane and i think higher for special applications. they do have pumps at the facility though that pump sl99 fuel at a mere $3.24 litre. my question is easy i think but i thought i would ask the group before using it in my truck. if i program the truck with the 94 octane program and then add a +4 to the global spark thus allowing me in theory (according to research) to run at 98 octane (99 actual) without losing the benefits of a higher octane fuel, will the result be the tune be what i need for driving using the program settings at 94 on the 99 fuel? OR Should i book an entirely new dyno appointment and have it completely re-tuned at the 99 octane level which the truck will be running on from now on? [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
SCT Tuning with a high octane gas
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