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SVTPerformance's Chain of Restaurants
A Taste of Home
California
discovered 110 octane in orange county
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<blockquote data-quote="reivaxtorres" data-source="post: 5261989" data-attributes="member: 50582"><p>i think if you use 91 oct with an 87 tune (yes, i know, 4v have a 91 tune, only us lonely 2v guys have the 87 tune) it actually makes your car loose power. forgot the exact specifics, but i believe that 91 oct requires higher temps to ignite(sp) than 87. higher compression = higher cylinder temps. nothing harmful if you use higher octane than is required, but you probably wont make any power gain unless you get a matching tune. using a lower octane than required, well, you guys know what happens</p></blockquote><p></p>
[QUOTE="reivaxtorres, post: 5261989, member: 50582"] i think if you use 91 oct with an 87 tune (yes, i know, 4v have a 91 tune, only us lonely 2v guys have the 87 tune) it actually makes your car loose power. forgot the exact specifics, but i believe that 91 oct requires higher temps to ignite(sp) than 87. higher compression = higher cylinder temps. nothing harmful if you use higher octane than is required, but you probably wont make any power gain unless you get a matching tune. using a lower octane than required, well, you guys know what happens [/QUOTE]
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SVTPerformance's Chain of Restaurants
A Taste of Home
California
discovered 110 octane in orange county
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