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SVT Shelby GT500
put a half a tank of 87oct on a 93 tune!
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<blockquote data-quote="jamied" data-source="post: 12830324" data-attributes="member: 139886"><p>You've got at least 91 or better in the tank, I wouldn't drag race or red line it on a 98' high humidity day.....but it really should be fine. Who knows if 93 pump gas is <em>really</em> 93, It's not aviation fuel or race gas where it's held to a stricter standard. Your tune should not be on the edge of a couple octane points. When I first took delivery of my 2008 I already had the SCT proracer software and I loaded a 93 tune when I got home (The car was used and had 1300mi, a 62yr old Shelby enthusiast owned it.) I had knock at 3200rpms, I knew the dealership put 87oct in. At half tank I filled it with 93 and the detonation went away. There's a <em>lot </em>of room in the timing of these cars, with 9psi of boost, and the usual bolt on's, I am safely running 23.8' of total timing.(stock data log's at 20') That's on an 75'-80' deg day. I'm <em>not</em> saying everyone shouldn't run the best pump gas that's available in their area, I'm just saying not to worry.</p></blockquote><p></p>
[QUOTE="jamied, post: 12830324, member: 139886"] You've got at least 91 or better in the tank, I wouldn't drag race or red line it on a 98' high humidity day.....but it really should be fine. Who knows if 93 pump gas is [I]really[/I] 93, It's not aviation fuel or race gas where it's held to a stricter standard. Your tune should not be on the edge of a couple octane points. When I first took delivery of my 2008 I already had the SCT proracer software and I loaded a 93 tune when I got home (The car was used and had 1300mi, a 62yr old Shelby enthusiast owned it.) I had knock at 3200rpms, I knew the dealership put 87oct in. At half tank I filled it with 93 and the detonation went away. There's a [I]lot [/I]of room in the timing of these cars, with 9psi of boost, and the usual bolt on's, I am safely running 23.8' of total timing.(stock data log's at 20') That's on an 75'-80' deg day. I'm [I]not[/I] saying everyone shouldn't run the best pump gas that's available in their area, I'm just saying not to worry. [/QUOTE]
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SVT Shelby GT500
put a half a tank of 87oct on a 93 tune!
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