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SVTPerformance's Chain of Restaurants
Road Side Pub
Racing Fuel (110 Octane) Question
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<blockquote data-quote="thomas91169" data-source="post: 10326417" data-attributes="member: 40530"><p>think of it as an insurance policy.</p><p></p><p></p><p>Say you get your car tuned in the summer. Come winter the cooler air (denser=more oxygen) starts to lean out your tune. You go for a night of freeway runs and with just 91/93 on a tune for just that, you start to get a slight bit of knock/predetonation up in the top of 4th, fine for the first few runs but the 3rd run you get compounded heat soak and end up taking the car through 4th and into 5th......your pistons expand, your rings cry for mercy as they are pummeled with 2000+psi flamefronts from predetonation, your 7 and 8th cylinders red hot due to poor coolant flow and leaner burn from manifold design. With a splash of 100 or better, you can increase the octane rating and help stave off some of that knock/predetonation. </p><p></p><p>you'd be surprised how much environmental variables affect your tune. And since your tune was based on a summers day in a controlled environment, your tuner took no consideration for the winter night you were out there pummeling the competition all the while your tune went from a bit on the safe side to over the edge.</p></blockquote><p></p>
[QUOTE="thomas91169, post: 10326417, member: 40530"] think of it as an insurance policy. Say you get your car tuned in the summer. Come winter the cooler air (denser=more oxygen) starts to lean out your tune. You go for a night of freeway runs and with just 91/93 on a tune for just that, you start to get a slight bit of knock/predetonation up in the top of 4th, fine for the first few runs but the 3rd run you get compounded heat soak and end up taking the car through 4th and into 5th......your pistons expand, your rings cry for mercy as they are pummeled with 2000+psi flamefronts from predetonation, your 7 and 8th cylinders red hot due to poor coolant flow and leaner burn from manifold design. With a splash of 100 or better, you can increase the octane rating and help stave off some of that knock/predetonation. you'd be surprised how much environmental variables affect your tune. And since your tune was based on a summers day in a controlled environment, your tuner took no consideration for the winter night you were out there pummeling the competition all the while your tune went from a bit on the safe side to over the edge. [/QUOTE]
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SVTPerformance's Chain of Restaurants
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Racing Fuel (110 Octane) Question
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