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Old 10 Nov 2004, 08:24 am
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Default Gas ?

A friend of mine's brother from out of town was visiting
and he came over to see my Cruiser.He's has a GT and I said
the bad thing about a GT is you have to use primeum gas.He said
all he uses is regular unleaded with ethenal which is 90 octain.
Is this true?He has had his GT for over a year and a half and has had no problems.I thought you had to use 93 octain.
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Old 10 Nov 2004, 09:19 am
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Stock GT is fine using medium grade. If you want better performance or if you have Stage 1, you should be using the higher octane rating.
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Old 10 Nov 2004, 11:10 am
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Knock sensor ought to keep harm from being done, but it'll retard ignition to prevent ping, and that'll keep performance down.
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Old 10 Nov 2004, 11:12 am
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[quote]Originally posted by crazie.eddie

Stock GT is fine using medium grade. If you want better performance or if you have Stage 1, you should be using the higher octane rating.
[/quotte

ED, how about turbo lite with stage 1?
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Old 10 Nov 2004, 01:02 pm
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[quote]quote:Originally posted by Jimbo

Quote:
Originally posted by crazie.eddie

Stock GT is fine using medium grade. If you want better performance or if you have Stage 1, you should be using the higher octane rating.
[/quotte

ED, how about turbo lite with stage 1?
Stage 1 changes timing and fuel curves. To get the most performance out of it you need premium or else the knock sensor will pull timing, reducing performance.
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Old 10 Nov 2004, 03:44 pm
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[quote]quote:Originally posted by Jimbo

Quote:
Originally posted by crazie.eddie

Stock GT is fine using medium grade. If you want better performance or if you have Stage 1, you should be using the higher octane rating.
[/quotte

ED, how about turbo lite with stage 1?
Stage 1 levels the playing field. If you start with an HO GT or a Turbo Lite and add S1 to either, you end up in the exact same place. Premium fuel is then recommended, although you could probably safely use mid-grade is needed. At around 10 cents a gallon more for premium I figure it's about a buck and half per tank more for the good stuff - so it's all I've used since putting S1 on my Lite.
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Old 10 Nov 2004, 05:25 pm
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Here is my question, why invest in stage 1 and then retard the whole thing by using regular or mid grade fuel?? When prices go sky high I too use regular grade 87 octane if I am only going around town but I dont have stage 1![8)]
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Old 10 Nov 2004, 05:56 pm
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[|)] My feelings even for the GT/High Output turbo. It was designed to run on premium gasoline and will try to protect itself from damage by cutting back on power when a lower grade of gasoline is used but I can certainly tell a difference between performance with premium vs mid grade and I personally would not use regular in my GT unless I had no alternative. Stage 1 makes the need for premium totally necessary. With the turbo lite (without Stage 1) there is not a problem with running lower grades of gasoline since it was tuned for the lower grades and in fact running premium in a standard turbo lite may be a waste of money.

As Mike-In-Orange described, the turbo lite with Stage 1 is the same as a GT/HO with Stage 1 so premium is required.
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