jvakos
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Totally random but I pulled Into a Shell gas station in Naperville IL (was near my mother’s house) that has a pump offering race gas 100 octane which I have never seen at any Chicago area gas station.
Question - would running a mix of this 100 octane race gas and 93 octane provide a noticeable power boost on a stock E63 or does it only provide power benefit on a E63 tuned specifically for 100 octane???
Im tempted to try it next visit to mom
Question - would running a mix of this 100 octane race gas and 93 octane provide a noticeable power boost on a stock E63 or does it only provide power benefit on a E63 tuned specifically for 100 octane???
Im tempted to try it next visit to mom
MaschioneCazzuto
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Mar 17, 2026
Waste of $
Out Of Control!!
PeterUbers
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Hey man
Like you said, you need to be tuned for it to take advantage of it ... won't make a difference otherwise
Like you said, you need to be tuned for it to take advantage of it ... won't make a difference otherwise
kponti
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I made 26-28rwhp mixing 5 gallons of Gulf110 into half a tank of 93 octane on the 3rd pull on a mustang dyno.
The mix was done while the car was still strapped to the dyno. First pull with 110 made less power than before adding the 110 octane
The mix was done while the car was still strapped to the dyno. First pull with 110 made less power than before adding the 110 octane
jvakos
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Quote:
The mix was done while the car was still strapped to the dyno. First pull with 110 made less power than before adding the 110 octane
kponti - hey appreciate the feedback....so when you added the 5 gallons of 110 to your 1/2 tank of 93 were you also tuned specifically for that? Or did the existing tune you had for 93 octane show improvement with the 110 stuff?? Originally Posted by kponti
I made 26-28rwhp mixing 5 gallons of Gulf110 into half a tank of 93 octane on the 3rd pull on a mustang dyno.The mix was done while the car was still strapped to the dyno. First pull with 110 made less power than before adding the 110 octane
jvakos
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Quote:
yeah that’s what I thought....might email Chris too and get his take. Seems it maybe a waste of $$$ if not tuned for it.....Originally Posted by PeterUbers
Hey man
Like you said, you need to be tuned for it to take advantage of it ... won't make a difference otherwise
Like you said, you need to be tuned for it to take advantage of it ... won't make a difference otherwise
At $6.99 per gallon.......no thanks!
C280 Sport
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Unless you have a car tuned for 100 octane its fine. If you have a stock AMG then no it is just a waste of money.
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